A denial of service (DoS) vulnerability exists in the Cisco IOS XE Software due to a Linux Kernel IP fragment reassembly vulnerability, known as FragmentSmack.
An unauthenticated, remote attacker can exploit this issue, via stream of fragmented IPv4 or IPv6 packets, to cause the affected device to stop responding.

New kernel packages are available for Slackware 14.2 and -current to fix security issues.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2925 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4     and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment     reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a     denial of service on the system. (CVE-2018-5391)

    * kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact     (CVE-2018-10675)

    * kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and     Networking and Nokia Bell Labs) for reporting CVE-2018-5391 and Qualys Research Labs for reporting     CVE-2018-14634.

    Bug Fix(es):

    * Previously, the kernel source code lacked support to report the Speculative Store Bypass Disable (SSBD)     vulnerability status on IBM Power Systems. As a consequence, the     /sys/devices/system/cpu/vulnerabilities/spec_store_bypass file incorrectly reported Not affected. This     fix updates the kernel source code to properly report the SSBD status either as Vulnerable or     Mitigation: Kernel entry/exit barrier (TYPE), where TYPE is one of eieio, hwsync, fallback, or     unknown. (BZ#1615873)

    * After updating the system to prevent the L1 Terminal Fault (L1TF) vulnerability, only one thread was     detected on systems that offer processing of two threads on a single processor core. With this update, the
    __max_smt_threads() function has been fixed. As a result, both threads are now detected correctly in the     described situation. (BZ#1625335)

    * Previously, a kernel panic occurred when the kernel tried to make an out of bound access to the array     that describes the L1 Terminal Fault (L1TF) mitigation state on systems without Extended Page Tables (EPT)     support. This update extends the array of mitigation states to cover all the states, which effectively     prevents out of bound array access. Also, this update enables rejecting invalid, irrelevant values, that     might be erroneously provided by the userspace. As a result, the kernel no longer panics in the described     scenario. (BZ#1629634)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - In the Linux kernel through 4.14.13, the     rds_message_alloc_sgs() function does not validate a     value that is used during DMA page allocation, leading     to a heap-based out-of-bounds write (related to the     rds_rdma_extra_size() function in 'net/rds/rdma.c') and     thus to a system panic. Due to the nature of the flaw,     privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2018-5332)

  - In the Linux kernel through 4.14.13, the     rds_cmsg_atomic() function in 'net/rds/rdma.c'     mishandles cases where page pinning fails or an invalid     address is supplied by a user. This can lead to a NULL     pointer dereference in rds_atomic_free_op() and thus to     a system panic.(CVE-2018-5333)

  - A flaw was found in the Linux kernel's handling of     loopback devices. An attacker, who has permissions to     setup loopback disks, may create a denial of service or     other unspecified actions.(CVE-2018-5344)

  - The acpi_smbus_hc_add function in drivers/acpi/sbshc.c     in the Linux kernel, through 4.14.15, allows local     users to obtain sensitive address information by     reading dmesg data from an SBS HC printk     call.(CVE-2018-5750)

  - The futex_requeue function in kernel/futex.c in the     Linux kernel, before 4.14.15, might allow attackers to     cause a denial of service (integer overflow) or     possibly have unspecified other impacts by triggering a     negative wake or requeue value. Due to the nature of     the flaw, privilege escalation cannot be fully ruled     out, although we believe it is unlikely.(CVE-2018-6927)

  - Memory leak in the sas_smp_get_phy_events function in     drivers/scsi/libsas/sas_expander.c in the Linux kernel     allows local users to cause a denial of service (kernel     memory exhaustion) via multiple read accesses to files     in the /sys/class/sas_phy directory.(CVE-2018-7757)

  - A an integer overflow vulnerability was discovered in     the Linux kernel, from version 3.4 through 4.15, in the     drivers/gpu/drm/udl/udl_fb.c:udl_fb_mmap() function. An     attacker with access to the udldrmfb driver could     exploit this to obtain full read and write permissions     on kernel physical pages, resulting in a code execution     in kernel space.(CVE-2018-8781)

  - A flaw was found in the way the Linux KVM module     processed the trap flag(TF) bit in EFLAGS during     emulation of the syscall instruction, which leads to a     debug exception(#DB) being raised in the guest stack. A     user/process inside a guest could use this flaw to     potentially escalate their privileges inside the guest.
    Linux guests are not affected by this.(CVE-2017-7518)

  - A division-by-zero in set_termios(), when debugging is     enabled, was found in the Linux kernel. When the     [io_ti] driver is loaded, a local unprivileged attacker     can request incorrect high transfer speed in the     change_port_settings() in the     drivers/usb/serial/io_ti.c so that the divisor value     becomes zero and causes a system crash resulting in a     denial of service.(CVE-2017-18360)

  - It was found that the Linux kernel can hit a BUG_ON()     statement in the __xfs_get_blocks() in the     fs/xfs/xfs_aops.c because of a race condition between     direct and memory-mapped I/O associated with a hole in     a file that is handled with BUG_ON() instead of an I/O     failure. This allows a local unprivileged attacker to     cause a system crash and a denial of     service.(CVE-2016-10741)

  - Since Linux kernel version 3.2, the mremap() syscall     performs TLB flushes after dropping pagetable locks. If     a syscall such as ftruncate() removes entries from the     pagetables of a task that is in the middle of mremap(),     a stale TLB entry can remain for a short time that     permits access to a physical page after it has been     released back to the page allocator and reused. This is     fixed in the following kernel versions: 4.9.135,     4.14.78, 4.18.16, 4.19.(CVE-2018-18281)

  - An issue was discovered in the proc_pid_stack function     in fs/proc/base.c in the Linux kernel. An attacker with     a local account can trick the stack unwinder code to     leak stack contents to userspace. The fix allows only     root to inspect the kernel stack of an arbitrary     task.(CVE-2018-17972)

  - An issue was discovered in can_can_gw_rcv in     net/can/gw.c in the Linux kernel through 4.19.13. The     CAN frame modification rules allow bitwise logical     operations that can be also applied to the can_dlc     field. Because of a missing check, the CAN drivers may     write arbitrary content beyond the data registers in     the CAN controller's I/O memory when processing can-gw     manipulated outgoing frames. This is related to     cgw_csum_xor_rel. An unprivileged user can trigger a     system crash (general protection fault).(CVE-2019-3701)

  - A flaw was found In the Linux kernel, through version     4.19.6, where a local user could exploit a     use-after-free in the ALSA driver by supplying a     malicious USB Sound device (with zero interfaces) that     is mishandled in usb_audio_probe in sound/usb/card.c.
    An attacker could corrupt memory and possibly escalate     privileges if the attacker is able to have physical     access to the system.(CVE-2018-19824)

  - A security flaw was found in the Linux kernel in a way     that the cleancache subsystem clears an inode after the     final file truncation (removal). The new file created     with the same inode may contain leftover pages from     cleancache and the old file data instead of the new     one.(CVE-2018-16862)

  - A use-after-free flaw can occur in the Linux kernel due     to a race condition between packet_do_bind() and     packet_notifier() functions called for an AF_PACKET     socket. An unprivileged, local user could use this flaw     to induce kernel memory corruption on the system,     leading to an unresponsive system or to a crash. Due to     the nature of the flaw, privilege escalation cannot be     fully ruled out.(CVE-2018-18559)

  - A new software page cache side channel attack scenario     was discovered in operating systems that implement the     very common 'page cache' caching mechanism. A malicious     user/process could use 'in memory' page-cache knowledge     to infer access timings to shared memory and gain     knowledge which can be used to reduce effectiveness of     cryptographic strength by monitoring algorithmic     behavior, infer access patterns of memory to determine     code paths taken, and exfiltrate data to a blinded     attacker through page-granularity access times as a     side-channel.(CVE-2019-5489)

  - A flaw was found in mmap in the Linux kernel allowing     the process to map a null page. This allows attackers     to abuse this mechanism to turn null pointer     dereferences into workable exploits.(CVE-2019-9213)

  - A flaw named FragmentSmack was found in the way the     Linux kernel handled reassembly of fragmented IPv4 and     IPv6 packets. A remote attacker could use this flaw to     trigger time and calculation expensive fragment     reassembly algorithm by sending specially crafted     packets which could lead to a CPU saturation and hence     a denial of service on the system.(CVE-2018-5391)

  - An issue was discovered in the Linux kernel through     4.19. An information leak in cdrom_ioctl_select_disc in     drivers/cdrom/cdrom.c could be used by local attackers     to read kernel memory because a cast from unsigned long     to int interferes with bounds checking.(CVE-2018-18710)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3741-1 advisory.

    It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a     malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault     (L1TF). A local attacker in a guest virtual machine could use this to expose sensitive information (memory     from other guests or the host OS). (CVE-2018-3646)

    It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a     malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault     (L1TF). A local attacker could use this to expose sensitive information (memory from the kernel or other     processes). (CVE-2018-3620)

    Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel performed algorithmically     expensive operations in some situations when handling incoming packets. A remote attacker could use this     to cause a denial of service. (CVE-2018-5390)

    Juha-Matti Tilli discovered that the IP implementation in the Linux kernel performed algorithmically     expensive operations in some situations when handling incoming packet fragments. A remote attacker could     use this to cause a denial of service. (CVE-2018-5391)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3742-1 advisory.

    It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a     malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault     (L1TF). A local attacker in a guest virtual machine could use this to expose sensitive information (memory     from other guests or the host OS). (CVE-2018-3646)

    It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a     malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault     (L1TF). A local attacker could use this to expose sensitive information (memory from the kernel or other     processes). (CVE-2018-3620)

    Andrey Konovalov discovered an out-of-bounds read in the POSIX timers subsystem in the Linux kernel. A     local attacker could use this to cause a denial of service (system crash) or expose sensitive information.
    (CVE-2017-18344)

    Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel performed algorithmically     expensive operations in some situations when handling incoming packets. A remote attacker could use this     to cause a denial of service. (CVE-2018-5390)

    Juha-Matti Tilli discovered that the IP implementation in the Linux kernel performed algorithmically     expensive operations in some situations when handling incoming packet fragments. A remote attacker could     use this to cause a denial of service. (CVE-2018-5391)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The openSUSE Leap 42.3 kernel was updated to 4.4.143 to receive various security and bugfixes.

The following security bugs were fixed :

  - CVE-2017-18344: The timer_create syscall implementation     in kernel/time/posix-timers.c didn't properly validate     the sigevent->sigev_notify field, which leads to     out-of-bounds access in the show_timer function (called     when /proc/$PID/timers is read). This allowed userspace     applications to read arbitrary kernel memory (on a     kernel built with CONFIG_POSIX_TIMERS and     CONFIG_CHECKPOINT_RESTORE) (bnc#1102851 bnc#1103580).

  - CVE-2018-10876: A flaw was found in Linux kernel in the     ext4 filesystem code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image. (bnc#1099811)

  - CVE-2018-10877: Linux kernel ext4 filesystem is     vulnerable to an out-of-bound access in the     ext4_ext_drop_refs() function when operating on a     crafted ext4 filesystem image. (bnc#1099846)

  - CVE-2018-10878: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write and a     denial of service or unspecified other impact is     possible by mounting and operating a crafted ext4     filesystem image. (bnc#1099813)

  - CVE-2018-10879: A flaw was found in the ext4 filesystem.
    A local user can cause a use-after-free in     ext4_xattr_set_entry function and a denial of service or     unspecified other impact may occur by renaming a file in     a crafted ext4 filesystem image. (bnc#1099844)

  - CVE-2018-10880: Linux kernel is vulnerable to a     stack-out-of-bounds write in the ext4 filesystem code     when mounting and writing to a crafted ext4 image in     ext4_update_inline_data(). An attacker could use this to     cause a system crash and a denial of service.
    (bnc#1099845)

  - CVE-2018-10881: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound access in     ext4_get_group_info function, a denial of service, and a     system crash by mounting and operating on a crafted ext4     filesystem image. (bnc#1099864)

  - CVE-2018-10882: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound write in in     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image. (bnc#1099849)

  - CVE-2018-10883: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write in     jbd2_journal_dirty_metadata(), a denial of service, and     a system crash by mounting and operating on a crafted     ext4 filesystem image. (bnc#1099863)

  - CVE-2018-14734: drivers/infiniband/core/ucma.c allowed     ucma_leave_multicast to access a certain data structure     after a cleanup step in ucma_process_join, which allowed     attackers to cause a denial of service (use-after-free)     (bnc#1103119).

  - CVE-2018-3620: Systems with microprocessors utilizing     speculative execution and address translations may allow     unauthorized disclosure of information residing in the     L1 data cache to an attacker with local user access via     a terminal page fault and a side-channel analysis     (bnc#1087081 1089343 ).

  - CVE-2018-3646: Systems with microprocessors utilizing     speculative execution and address translations may allow     unauthorized disclosure of information residing in the     L1 data cache to an attacker with local user access with     guest OS privilege via a terminal page fault and a     side-channel analysis (bnc#1089343 1104365).

  - CVE-2018-5390 aka 'SegmentSmack': The Linux kernel could     be forced to make very expensive calls to     tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for     every incoming packet which can lead to a denial of     service (bnc#1102340).

  - CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP     packet reassembly could be used by remote attackers to     consume lots of CPU time (bnc#1103097).

The following non-security bugs were fixed :

  - Add support for 5,25,50, and 100G to 802.3ad bonding     driver (bsc#1096978)

  - ahci: Disable LPM on Lenovo 50 series laptops with a too     old BIOS (bnc#1012382).

  - arm64: do not open code page table entry creation     (bsc#1102197).

  - arm64: kpti: Use early_param for kpti= command-line     option (bsc#1102188).

  - arm64: Make sure permission updates happen for pmd/pud     (bsc#1102197).

  - atm: zatm: Fix potential Spectre v1 (bnc#1012382).

  - bcm63xx_enet: correct clock usage (bnc#1012382).

  - bcm63xx_enet: do not write to random DMA channel on     BCM6345 (bnc#1012382).

  - blkcg: simplify statistic accumulation code     (bsc#1082979).

  - block: copy ioprio in __bio_clone_fast() (bsc#1082653).

  - block/swim: Fix array bounds check (bsc#1082979).

  - bpf: fix loading of BPF_MAXINSNS sized programs     (bsc#1012382).

  - bpf, x64: fix memleak when not converging after image     (bsc#1012382).

  - btrfs: Do not remove block group still has pinned down     bytes (bsc#1086457).

  - cachefiles: Fix missing clear of the     CACHEFILES_OBJECT_ACTIVE flag (bsc#1099858).

  - cachefiles: Fix refcounting bug in backing-file read     monitoring (bsc#1099858).

  - cachefiles: Wait rather than BUG'ing on 'Unexpected     object collision' (bsc#1099858).

  - cifs: fix bad/NULL ptr dereferencing in     SMB2_sess_setup() (bsc#1090123).

  - compiler, clang: always inline when     CONFIG_OPTIMIZE_INLINING is disabled (bnc#1012382).

  - compiler, clang: properly override 'inline' for clang     (bnc#1012382).

  - compiler, clang: suppress warning for unused static     inline functions (bnc#1012382).

  - compiler-gcc.h: Add __attribute__((gnu_inline)) to all     inline declarations (bnc#1012382).

  - cpu/hotplug: Add sysfs state interface (bsc#1089343).

  - cpu/hotplug: Provide knobs to control SMT (bsc#1089343).

  - cpu/hotplug: Split do_cpu_down() (bsc#1089343).

  - crypto: crypto4xx - fix crypto4xx_build_pdr,     crypto4xx_build_sdr leak (bnc#1012382).

  - crypto: crypto4xx - remove bad list_del (bnc#1012382).

  - dm thin metadata: remove needless work from
    __commit_transaction (bsc#1082979).

  - drm/msm: Fix possible null dereference on failure of     get_pages() (bsc#1102394).

  - drm: re-enable error handling (bsc#1103884).

  - esp6: fix memleak on error path in esp6_input     (git-fixes).

  - ext4: check for allocation block validity with block     group locked (bsc#1104495).

  - ext4: do not update s_last_mounted of a frozen fs     (bsc#1101841).

  - ext4: factor out helper ext4_sample_last_mounted()     (bsc#1101841).

  - ext4: fix check to prevent initializing reserved inodes     (bsc#1104319).

  - ext4: fix false negatives *and* false positives in     ext4_check_descriptors() (bsc#1103445).

  - ext4: fix inline data updates with checksums enabled     (bsc#1104494).

  - fscache: Allow cancelled operations to be enqueued     (bsc#1099858).

  - fscache: Fix reference overput in     fscache_attach_object() error handling (bsc#1099858).

  - genirq: Make force irq threading setup more robust     (bsc#1082979).

  - hid: usbhid: add quirk for innomedia INNEX GENESIS/ATARI     adapter (bnc#1012382).

  - ib/isert: fix T10-pi check mask setting (bsc#1082979).

  - ibmasm: do not write out of bounds in read handler     (bnc#1012382).

  - ibmvnic: Fix error recovery on login failure     (bsc#1101789).

  - ibmvnic: Remove code to request error information     (bsc#1104174).

  - ibmvnic: Revise RX/TX queue error messages     (bsc#1101331).

  - ibmvnic: Update firmware error reporting with cause     string (bsc#1104174).

  - iw_cxgb4: correctly enforce the max reg_mr depth     (bnc#1012382).

  - kabi protect includes in include/linux/inet.h     (bsc#1095643).

  - kabi protect net/core/utils.c includes (bsc#1095643).

  - kABI: protect struct loop_device (kabi).

  - kABI: reintroduce __static_cpu_has_safe (kabi).

  - Kbuild: fix # escaping in .cmd files for future Make     (bnc#1012382).

  - keys: DNS: fix parsing multiple options (bnc#1012382).

  - kvm: arm/arm64: Drop resource size check for GICV window     (bsc#1102215).

  - kvm: arm/arm64: Set dist->spis to NULL after kfree     (bsc#1102214).

  - libata: do not try to pass through NCQ commands to     non-NCQ devices (bsc#1082979).

  - loop: add recursion validation to LOOP_CHANGE_FD     (bnc#1012382).

  - loop: remember whether sysfs_create_group() was done     (bnc#1012382).

  - mmc: dw_mmc: fix card threshold control configuration     (bsc#1102203).

  - mm: check VMA flags to avoid invalid PROT_NONE NUMA     balancing (bsc#1097771).

  - net: cxgb3_main: fix potential Spectre v1 (bnc#1012382).

  - net: dccp: avoid crash in ccid3_hc_rx_send_feedback()     (bnc#1012382).

  - net: dccp: switch rx_tstamp_last_feedback to monotonic     clock (bnc#1012382).

  - netfilter: ebtables: reject non-bridge targets     (bnc#1012382).

  - netfilter: nf_queue: augment nfqa_cfg_policy     (bnc#1012382).

  - netfilter: x_tables: initialise match/target check     parameter struct (bnc#1012382).

  - net/mlx5: Fix command interface race in polling mode     (bnc#1012382).

  - net/mlx5: Fix incorrect raw command length parsing     (bnc#1012382).

  - net: mvneta: fix the Rx desc DMA address in the Rx path     (bsc#1102207).

  - net/nfc: Avoid stalls when nfc_alloc_send_skb() returned     NULL (bnc#1012382).

  - net: off by one in inet6_pton() (bsc#1095643).

  - net: phy: marvell: Use strlcpy() for     ethtool::get_strings (bsc#1102205).

  - net_sched: blackhole: tell upper qdisc about dropped     packets (bnc#1012382).

  - net: sungem: fix rx checksum support (bnc#1012382).

  - net/utils: generic inet_pton_with_scope helper     (bsc#1095643).

  - null_blk: use sector_div instead of do_div     (bsc#1082979).

  - nvme-rdma: Check remotely invalidated rkey matches our     expected rkey (bsc#1092001).

  - nvme-rdma: default MR page size to 4k (bsc#1092001).

  - nvme-rdma: do not complete requests before a send work     request has completed (bsc#1092001).

  - nvme-rdma: do not suppress send completions     (bsc#1092001).

  - nvme-rdma: Fix command completion race at error recovery     (bsc#1090435).

  - nvme-rdma: make nvme_rdma_[create|destroy]_queue_ib     symmetrical (bsc#1092001).

  - nvme-rdma: use inet_pton_with_scope helper     (bsc#1095643).

  - nvme-rdma: Use mr pool (bsc#1092001).

  - nvme-rdma: wait for local invalidation before completing     a request (bsc#1092001).

  - ocfs2: subsystem.su_mutex is required while accessing     the item->ci_parent (bnc#1012382).

  - pci: ibmphp: Fix use-before-set in get_max_bus_speed()     (bsc#1100132).

  - perf tools: Move syscall number fallbacks from     perf-sys.h to tools/arch/x86/include/asm/ (bnc#1012382).

  - pm / hibernate: Fix oops at snapshot_write()     (bnc#1012382).

  - powerpc/64: Initialise thread_info for emergency stacks     (bsc#1094244, bsc#1100930, bsc#1102683).

  - powerpc/fadump: handle crash memory ranges array index     overflow (bsc#1103269).

  - powerpc/fadump: merge adjacent memory ranges to reduce     PT_LOAD segements (bsc#1103269).

  - qed: Limit msix vectors in kdump kernel to the minimum     required count (bnc#1012382).

  - r8152: napi hangup fix after disconnect (bnc#1012382).

  - rdma/ocrdma: Fix an error code in ocrdma_alloc_pd()     (bsc#1082979).

  - rdma/ocrdma: Fix error codes in ocrdma_create_srq()     (bsc#1082979).

  - rdma/ucm: Mark UCM interface as BROKEN (bnc#1012382).

  - rds: avoid unenecessary cong_update in loop transport     (bnc#1012382).

  - Revert     'block-cancel-workqueue-entries-on-blk_mq_freeze_queue'     (bsc#1103717)

  - Revert 'sit: reload iphdr in ipip6_rcv' (bnc#1012382).

  - Revert 'x86/cpufeature: Move some of the scattered     feature bits to x86_capability' (kabi).

  - Revert 'x86/cpu: Probe CPUID leaf 6 even when     cpuid_level == 6' (kabi).

  - rtlwifi: rtl8821ae: fix firmware is not ready to run     (bnc#1012382).

  - s390/qeth: fix error handling in adapter command     callbacks (bnc#1103745, LTC#169699).

  - sched/smt: Update sched_smt_present at runtime     (bsc#1089343).

  - scsi: qlogicpti: Fix an error handling path in     'qpti_sbus_probe()' (bsc#1082979).

  - scsi: sg: fix minor memory leak in error path     (bsc#1082979).

  - scsi: target: fix crash with iscsi target and dvd     (bsc#1082979).

  - smsc75xx: Add workaround for gigabit link up hardware     errata (bsc#1100132).

  - smsc95xx: Configure pause time to 0xffff when tx flow     control enabled (bsc#1085536).

  - supported.conf: Do not build KMP for openSUSE kernels     The merge of kselftest-kmp was overseen, and bad for     openSUSE-42.3

  - tcp: fix Fast Open key endianness (bnc#1012382).

  - tcp: prevent bogus FRTO undos with non-SACK flows     (bnc#1012382).

  - tools build: fix # escaping in .cmd files for future     Make (bnc#1012382).

  - uprobes/x86: Remove incorrect WARN_ON() in     uprobe_init_insn() (bnc#1012382).

  - usb: core: handle hub C_PORT_OVER_CURRENT condition     (bsc#1100132).

  - usb: quirks: add delay quirks for Corsair Strafe     (bnc#1012382).

  - usb: serial: ch341: fix type promotion bug in     ch341_control_in() (bnc#1012382).

  - usb: serial: cp210x: add another USB ID for Qivicon     ZigBee stick (bnc#1012382).

  - usb: serial: keyspan_pda: fix modem-status error     handling (bnc#1012382).

  - usb: serial: mos7840: fix status-register error handling     (bnc#1012382).

  - usb: yurex: fix out-of-bounds uaccess in read handler     (bnc#1012382).

  - vfio: platform: Fix reset module leak in error path     (bsc#1102211).

  - vfs: add the sb_start_intwrite_trylock() helper     (bsc#1101841).

  - vhost_net: validate sock before trying to put its fd     (bnc#1012382).

  - vmw_balloon: fix inflation with batching (bnc#1012382).

  - x86/alternatives: Add an auxilary section (bnc#1012382).

  - x86/alternatives: Discard dynamic check after init     (bnc#1012382).

  - x86/apic: Ignore secondary threads if nosmt=force     (bsc#1089343).

  - x86/asm: Add _ASM_ARG* constants for argument registers     to <asm/asm.h> (bnc#1012382).

  - x86/boot: Simplify kernel load address alignment check     (bnc#1012382).

  - x86/CPU/AMD: Do not check CPUID max ext level before     parsing SMP info (bsc#1089343).

  - x86/cpu/AMD: Evaluate smp_num_siblings early     (bsc#1089343).

  - x86/CPU/AMD: Move TOPOEXT reenablement before reading     smp_num_siblings (bsc#1089343). Update config files.

  - x86/cpu/AMD: Remove the pointless detect_ht() call     (bsc#1089343).

  - x86/cpu/common: Provide detect_ht_early() (bsc#1089343).

  - x86/cpufeature: Add helper macro for mask check macros     (bnc#1012382).

  - x86/cpufeature: Carve out X86_FEATURE_* (bnc#1012382).

  - x86/cpufeature: Get rid of the non-asm goto variant     (bnc#1012382).

  - x86/cpufeature: Make sure DISABLED/REQUIRED macros are     updated (bnc#1012382).

  - x86/cpufeature: Move some of the scattered feature bits     to x86_capability (bnc#1012382).

  - x86/cpufeature: Replace the old static_cpu_has() with     safe variant (bnc#1012382).

  - x86/cpufeature: Speed up cpu_feature_enabled()     (bnc#1012382).

  - x86/cpufeature: Update cpufeaure macros (bnc#1012382).

  - x86/cpu/intel: Evaluate smp_num_siblings early     (bsc#1089343).

  - x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6     (bnc#1012382).

  - x86/cpu: Provide a config option to disable     static_cpu_has (bnc#1012382).

  - x86/cpu: Remove the pointless CPU printout     (bsc#1089343).

  - x86/cpu/topology: Provide     detect_extended_topology_early() (bsc#1089343).

  - x86/fpu: Add an XSTATE_OP() macro (bnc#1012382).

  - x86/fpu: Get rid of xstate_fault() (bnc#1012382).

  - x86/headers: Do not include asm/processor.h in     asm/atomic.h (bnc#1012382).

  - x86/mm/pkeys: Fix mismerge of protection keys CPUID bits     (bnc#1012382).

  - x86/mm: Simplify p[g4um]d_page() macros (1087081).

  - x86/smpboot: Do not use smp_num_siblings in
    __max_logical_packages calculation (bsc#1089343).

  - x86/smp: Provide topology_is_primary_thread()     (bsc#1089343).

  - x86/topology: Add topology_max_smt_threads()     (bsc#1089343).

  - x86/topology: Provide topology_smt_supported()     (bsc#1089343).

  - x86/vdso: Use static_cpu_has() (bnc#1012382).

  - xen/grant-table: log the lack of grants (bnc#1085042).

  - xen-netfront: Fix mismatched rtnl_unlock (bnc#1101658).

  - xen-netfront: Update features after registering netdev     (bnc#1101658).

  - xhci: xhci-mem: off by one in xhci_stream_id_to_ring()     (bnc#1012382).

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2785 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A     remote attacker could use this flaw to trigger time and calculation expensive calls to     tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within     ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system.
    Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open     port, thus the attacks cannot be performed using spoofed IP addresses. (CVE-2018-5390)

    * A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4     and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment     reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a     denial of service on the system. (CVE-2018-5391)

    * kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact     (CVE-2018-10675)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and     Networking and Nokia Bell Labs) for reporting CVE-2018-5390 and CVE-2018-5391.

    Bug Fix(es):

    * On systems running Red Hat Enterprise Linux 7 with Red Hat OpenShift Container Platform 3.5, a node     sometimes got into NodeNotReady state after a CPU softlockup. Consequently, the node was not available.
    This update fixes an irq latency source in memory compaction. As a result, nodes no longer get into     NodeNotReady state under the described circumstances. (BZ#1596281)

    * Previously, the kernel source code was missing support to report the Speculative Store Bypass Disable     (SSBD) vulnerability status on IBM Power Systems and the little-endian variants of IBM Power Systems. As a     consequence, the /sys/devices/system/cpu/vulnerabilities/spec_store_bypass file incorrectly reported Not     affected on both CPU architectures. This fix updates the kernel source code to properly report the SSBD     status either as Vulnerable or Mitigation: Kernel entry/exit barrier (TYPE) where TYPE is one of     eieio, hwsync, fallback, or unknown. (BZ#1612351)

    * The hypervisors of Red Hat Enterprise Linux 7 virtual machines (VMs) in certain circumstances mishandled     the microcode update in the kernel. As a consequence, the VMs sometimes became unresponsive when booting.
    This update applies an upstream patch to avoid early microcode update when running under a hypervisor. As     a result, kernel hangs no longer occur in the described scenario. (BZ#1618388)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2924 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * A flaw named SegmentSmack was found in the way the Linux kernel handled specially crafted TCP packets. A     remote attacker could use this flaw to trigger time and calculation expensive calls to     tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() functions by sending specially modified packets within     ongoing TCP sessions which could lead to a CPU saturation and hence a denial of service on the system.
    Maintaining the denial of service condition requires continuous two-way TCP sessions to a reachable open     port, thus the attacks cannot be performed using spoofed IP addresses. (CVE-2018-5390)

    * A flaw named FragmentSmack was found in the way the Linux kernel handled reassembly of fragmented IPv4     and IPv6 packets. A remote attacker could use this flaw to trigger time and calculation expensive fragment     reassembly algorithm by sending specially crafted packets which could lead to a CPU saturation and hence a     denial of service on the system. (CVE-2018-5391)

    * kernel: mm: use-after-free in do_get_mempolicy function allows local DoS or other unspecified impact     (CVE-2018-10675)

    * kernel: Integer overflow in Linux's create_elf_tables function (CVE-2018-14634)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Red Hat would like to thank Juha-Matti Tilli (Aalto University - Department of Communications and     Networking and Nokia Bell Labs) for reporting CVE-2018-5390 and CVE-2018-5391 and Qualys Research Labs for     reporting CVE-2018-14634.

    Bug Fix(es):

    * After updating the system to prevent the L1 Terminal Fault (L1TF) vulnerability, only one thread was     detected on systems that offer processing of two threads on a single processor core. With this update, the
    __max_smt_threads() function has been fixed. As a result, both threads are now detected correctly in the     described situation. (BZ#1625334)

    * Previously, a kernel panic occurred when the kernel tried to make an out of bound access to the array     that describes the L1 Terminal Fault (L1TF) mitigation state on systems without Extended Page Tables (EPT)     support. This update extends the array of mitigation states to cover all the states, which effectively     prevents out of bound array access. Also, this update enables rejecting invalid, irrelevant values, that     might be erroneously provided by the userspace. As a result, the kernel no longer panics in the described     scenario. (BZ#1629633)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-3083 advisory.

    - [fs] exec: Limit arg stack to at most 75 of _STK_LIM (Yauheni Kaliuta) [1625991] {CVE-2018-14634}
    - [fs] exec: account for argv/envp pointers (Yauheni Kaliuta) [1625991] {CVE-2018-14634}
    - [cdrom] information leak in cdrom_ioctl_media_changed() (Sanskriti Sharma) [1578207] {CVE-2018-10940}
    - [fs] fs: get_rock_ridge_filename(): handle malformed NM entries (Bill O'Donnell) [1340778]     {CVE-2016-4913}
    - [mm] madvise: fix madvise() infinite loop under special circumstances (Rafael Aquini) [1552982]     {CVE-2017-18208}
    - [kernel] posix-timer: Properly check sigevent->sigev_notify (Phil Auld) [1613711] {CVE-2017-18344}
    - [sound] alsa: rawmidi: Change resized buffers atomically (Denys Vlasenko) [1593087] {CVE-2018-10902}
    - [fs] Fix up non-directory creation in SGID directories (Miklos Szeredi) [1600953] {CVE-2018-13405}
    - [scsi] libsas: fix memory leak in sas_smp_get_phy_events() (Tomas Henzl) [1558582] {CVE-2018-7757}
    - [vhost] fix info leak due to uninitialized memory (Jason Wang) [1573705] {CVE-2018-1118}
    - [net] ip: process in-order fragments efficiently (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] ipv6: defrag: drop non-last frags smaller than min mtu (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] ip: use rb trees for IP frag queue (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] revert ipv4: use skb coalescing in defragmentation (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] modify skb_rbtree_purge to return the truesize of all purged skbs (Sabrina Dubroca) [1613924]     {CVE-2018-5391}
    - [net] ip: discard IPv4 datagrams with overlapping segments (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [net] speed up skb_rbtree_purge() (Sabrina Dubroca) [1613924] {CVE-2018-5391}
    - [fs] timerfd: Protect the might cancel mechanism proper (Bill O'Donnell) [1485407] {CVE-2017-10661}
    - [netdrv] bnx2x: disable GSO where gso_size is too big for hardware (Jonathan Toppins) [1546760]     {CVE-2018-1000026}
    - [net] create skb_gso_validate_mac_len() (Jonathan Toppins) [1546760] {CVE-2018-1000026}
    - [fs] aio: properly check iovec sizes (Jeff Moyer) [1337518] {CVE-2015-8830}
    - [fs] ext4: avoid running out of journal credits when appending to an inline file (Lukas Czerner)     [1609759] {CVE-2018-10883}
    - [fs] jbd2: don't mark block as modified if the handle is out of credits (Lukas Czerner) [1609759]     {CVE-2018-10883}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of F5 Networks BIG-IP installed on the remote host is prior to 11.6.5.1 / 12.1.5 / 13.1.3 / 14.0.1.1 / 14.1.2.4 / 15.0.0. It is, therefore, affected by a vulnerability as referenced in the K74374841 advisory.

  - The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially     modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by     sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered     and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel     with the increase of the IP fragment reassembly queue size. (CVE-2018-5391)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Fixes for L1Terminal Fault security issues :

L1 Terminal Fault-OS/ SMM :

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and side-channel analysis.(CVE-2018-3620)

L1 Terminal Fault-VMM :

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and side-channel analysis.(CVE-2018-3646)

L1 Terminal Fault-SGX :

Systems with microprocessors utilizing speculative execution and Intel SGX may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user access via side-channel analysis. AWS is not affected by CVE-2018-3615 .
There is no AWS products related to enclave systems like SGX.(CVE-2018-3615)

Denial of service caused by a large number of IP fragments :

A denial of service attack by exhausting resources on a networked host by sending a large number of IP fragments that can not be reassembled by the receiver.(CVE-2018-5391)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3740-2 advisory.

    USN-3740-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu     16.04 LTS.

    It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a     malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault     (L1TF). A local attacker in a guest virtual machine could use this to expose sensitive information (memory     from other guests or the host OS). (CVE-2018-3646)

    It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a     malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault     (L1TF). A local attacker could use this to expose sensitive information (memory from the kernel or other     processes). (CVE-2018-3620)

    Juha-Matti Tilli discovered that the IP implementation in the Linux kernel performed algorithmically     expensive operations in some situations when handling incoming packet fragments. A remote attacker could     use this to cause a denial of service. (CVE-2018-5391)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2018-3620: Local attackers on baremetal systems     could use speculative code patterns on hyperthreaded     processors to read data present in the L1 Datacache used     by other hyperthreads on the same CPU core, potentially     leaking sensitive data. (bnc#1087081).

  - CVE-2018-3646: Local attackers in virtualized guest     systems could use speculative code patterns on     hyperthreaded processors to read data present in the L1     Datacache used by other hyperthreads on the same CPU     core, potentially leaking sensitive data, even from     other virtual machines or the host system.
    (bnc#1089343).

  - CVE-2018-5391 aka 'FragmentSmack': A flaw in the IP     packet reassembly could be used by remote attackers to     consume lots of CPU time (bnc#1103097).

  - CVE-2018-10876: A flaw was found in the ext4 filesystem     code. A use-after-free is possible in     ext4_ext_remove_space() function when mounting and     operating a crafted ext4 image. (bnc#1099811)

  - CVE-2018-10877: The ext4 filesystem is vulnerable to an     out-of-bound access in the ext4_ext_drop_refs() function     when operating on a crafted ext4 filesystem image.
    (bnc#1099846)

  - CVE-2018-10878: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write and a     denial of service or unspecified other impact is     possible by mounting and operating a crafted ext4     filesystem image. (bnc#1099813)

  - CVE-2018-10879: A flaw was found in the ext4 filesystem.
    A local user can cause a use-after-free in     ext4_xattr_set_entry function and a denial of service or     unspecified other impact may occur by renaming a file in     a crafted ext4 filesystem image. (bnc#1099844)

  - CVE-2018-10880: Linux kernel is vulnerable to a     stack-out-of-bounds write in the ext4 filesystem code     when mounting and writing to a crafted ext4 image in     ext4_update_inline_data(). An attacker could use this to     cause a system crash and a denial of service.
    (bnc#1099845)

  - CVE-2018-10881: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound access in     ext4_get_group_info function, a denial of service, and a     system crash by mounting and operating on a crafted ext4     filesystem image. (bnc#1099864)

  - CVE-2018-10882: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bound write in in     fs/jbd2/transaction.c code, a denial of service, and a     system crash by unmounting a crafted ext4 filesystem     image. (bnc#1099849)

  - CVE-2018-10883: A flaw was found in the ext4 filesystem.
    A local user can cause an out-of-bounds write in     jbd2_journal_dirty_metadata(), a denial of service, and     a system crash by mounting and operating on a crafted     ext4 filesystem image. (bnc#1099863)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

CVE-2017-18249

A race condition was discovered in the disk space allocator of F2FS. A user with access to an F2FS volume could use this to cause a denial of service or other security impact.

CVE-2018-1128, CVE-2018-1129

The cephx authentication protocol used by Ceph was susceptible to replay attacks, and calculated signatures incorrectly. These vulnerabilities in the server required changes to authentication that are incompatible with existing clients. The kernel's client code has now been updated to be compatible with the fixed server.

CVE-2018-3639 (SSB)

Multiple researchers have discovered that Speculative Store Bypass (SSB), a feature implemented in many processors, could be used to read sensitive information from another context. In particular, code in a software sandbox may be able to read sensitive information from outside the sandbox. This issue is also known as Spectre variant 4.

This update adds a further mitigation for this issue in the eBPF (Extended Berkeley Packet Filter) implementation.

CVE-2018-5391 (FragmentSmack)

Juha-Matti Tilli discovered a flaw in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker can take advantage of this flaw to trigger time and calculation expensive fragment reassembly algorithms by sending specially crafted packets, leading to remote denial of service.

This was previously mitigated by reducing the default limits on memory usage for incomplete fragmented packets. This update replaces that mitigation with a more complete fix.

CVE-2018-5848

The wil6210 wifi driver did not properly validate lengths in scan and connection requests, leading to a possible buffer overflow. On systems using this driver, a local user with the CAP_NET_ADMIN capability could use this for denial of service (memory corruption or crash) or potentially for privilege escalation.

CVE-2018-12896, CVE-2018-13053

Team OWL337 reported possible integer overflows in the POSIX timer implementation. These might have some security impact.

CVE-2018-13096, CVE-2018-13097, CVE-2018-13100, CVE-2018-14614, CVE-2018-14616

Wen Xu from SSLab at Gatech reported that crafted F2FS volumes could trigger a crash (BUG, Oops, or division by zero) and/or out-of-bounds memory access. An attacker able to mount such a volume could use this to cause a denial of service or possibly for privilege escalation.

CVE-2018-13406

Dr Silvio Cesare of InfoSect reported a potential integer overflow in the uvesafb driver. A user with permission to access such a device might be able to use this for denial of service or privilege escalation.

CVE-2018-14610, CVE-2018-14611, CVE-2018-14612, CVE-2018-14613

Wen Xu from SSLab at Gatech reported that crafted Btrfs volumes could trigger a crash (Oops) and/or out-of-bounds memory access. An attacker able to mount such a volume could use this to cause a denial of service or possibly for privilege escalation.

CVE-2018-15471 ((XSA-270)

Felix Wilhelm of Google Project Zero discovered a flaw in the hash handling of the xen-netback Linux kernel module. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in privilege escalation, denial of service, or information leaks.

https://xenbits.xen.org/xsa/advisory-270.html

CVE-2018-16862

Vasily Averin and Pavel Tikhomirov from Virtuozzo Kernel Team discovered that the cleancache memory management feature did not invalidate cached data for deleted files. On Xen guests using the tmem driver, local users could potentially read data from other users' deleted files if they were able to create new files on the same volume.

CVE-2018-17972

Jann Horn reported that the /proc/*/stack files in procfs leaked sensitive data from the kernel. These files are now only readable by users with the CAP_SYS_ADMIN capability (usually only root)

CVE-2018-18281

Jann Horn reported a race condition in the virtual memory manager that can result in a process briefly having access to memory after it is freed and reallocated. A local user could possibly exploit this for denial of service (memory corruption) or for privilege escalation.

CVE-2018-18690

Kanda Motohiro reported that XFS did not correctly handle some xattr (extended attribute) writes that require changing the disk format of the xattr. A user with access to an XFS volume could use this for denial of service.

CVE-2018-18710

It was discovered that the cdrom driver does not correctly validate the parameter to the CDROM_SELECT_DISC ioctl. A user with access to a cdrom device could use this to read sensitive information from the kernel or to cause a denial of service (crash).

CVE-2018-19407

Wei Wu reported a potential crash (Oops) in the KVM implementation for x86 processors. A user with access to /dev/kvm could use this for denial of service.

For Debian 8 'Jessie', these problems have been fixed in version 4.9.144-3.1~deb8u1. This version also includes fixes for Debian bugs #890034, #896911, #907581, #915229, and #915231; and other fixes included in upstream stable updates.

We recommend that you upgrade your linux-4.9 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
123515	Cisco IOS XE Software Linux Kernel IP Fragment DoS (cisco-sa-20180824-linux-ip-fragment)	Nessus	CISCO	2019/3/29	2021/6/28	high
126031	Slackware 14.2 / current : kernel (SSA:2019-169-01) (SACK Panic) (SACK Slowness)	Nessus	Slackware Local Security Checks	2019/6/19	2024/5/15	high
118164	RHEL 6 : kernel (RHSA-2018:2925)	Nessus	Red Hat Local Security Checks	2018/10/17	2026/1/26	high
124834	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1512)	Nessus	Huawei Local Security Checks	2019/5/13	2022/5/20	high
111751	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3741-1)	Nessus	Ubuntu Local Security Checks	2018/8/15	2025/3/26	medium
111753	Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3742-1)	Nessus	Ubuntu Local Security Checks	2018/8/15	2025/3/26	medium
111997	openSUSE Security Update : the Linux Kernel (openSUSE-2018-885) (Foreshadow)	Nessus	SuSE Local Security Checks	2018/8/20	2024/8/16	high
117781	RHEL 7 : kernel (RHSA-2018:2785)	Nessus	Red Hat Local Security Checks	2018/9/27	2024/11/5	high
118163	RHEL 6 : kernel (RHSA-2018:2924)	Nessus	Red Hat Local Security Checks	2018/10/17	2026/1/26	high
118770	Oracle Linux 7 : kernel (ELSA-2018-3083)	Nessus	Oracle Linux Local Security Checks	2018/11/7	2026/2/9	high
125484	F5 Networks BIG-IP : Linux kernel vulnerability (K74374841)	Nessus	F5 Networks Local Security Checks	2019/5/29	2026/10/21	high
111702	Amazon Linux AMI : kernel (ALAS-2018-1058) (Foreshadow)	Nessus	Amazon Linux Local Security Checks	2018/8/15	2025/3/26	medium
111750	Ubuntu 16.04 LTS : Linux kernel (HWE) vulnerabilities (USN-3740-2)	Nessus	Ubuntu Local Security Checks	2018/8/15	2025/3/26	medium
120082	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2018:2380-1) (Foreshadow)	Nessus	SuSE Local Security Checks	2019/1/2	2024/7/10	high
122879	Debian DLA-1715-1 : linux-4.9 security update (Spectre)	Nessus	Debian Local Security Checks	2019/3/18	2026/1/9	high

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