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

  - The kernel package contains the Linux kernel (vmlinuz),     the core of any Linux operating system. The kernel     handles the basic functions of the operating system:
    memory allocation, process allocation, device input and     output, etc.Security Fix(es):** DISPUTED ** In     kernel/compat.c in the Linux kernel before 3.17, as     used in Google Chrome OS and other products, there is a     possible out-of-bounds read. restart_syscall uses     uninitialized data when restarting     compat_sys_nanosleep. NOTE: this is disputed because     the code path is unreachable.(CVE-2014-3180)A heap     overflow flaw was found in the Linux kernel, all     versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi     chip driver. The vulnerability allows a remote attacker     to cause a system crash, resulting in a denial of     service, or execute arbitrary code. The highest threat     with this vulnerability is with the availability of the     system. If code execution occurs, the code will run     with the permissions of root. This will affect both     confidentiality and integrity of files on the     system.(CVE-2019-14901)A heap-based buffer overflow     vulnerability was found in the Linux kernel, version     kernel-2.6.32, in Marvell WiFi chip driver. A remote     attacker could cause a denial of service (system crash)     or, possibly execute arbitrary code, when the     lbs_ibss_join_existing function is called after a STA     connects to an AP.(CVE-2019-14896)A memory leak in the     ath10k_usb_hif_tx_sg() function in drivers/     net/wireless/ath/ath10k/usb.c in the Linux kernel     through 5.3.11 allows attackers to cause a denial of     service (memory consumption) by triggering     usb_submit_urb() failures, aka     CID-b8d17e7d93d2.(CVE-2019-19078)A memory leak in the     mlx5_fpga_conn_create_cq() function in drivers/     net/ethernet/mellanox/mlx5/core/fpga/conn.c in the     Linux kernel before 5.3.11 allows attackers to cause a     denial of service (memory consumption) by triggering     mlx5_vector2eqn() failures, aka     CID-c8c2a057fdc7.(CVE-2019-19045)A stack-based buffer     overflow was found in the Linux kernel, version     kernel-2.6.32, in Marvell WiFi chip driver. An attacker     is able to cause a denial of service (system crash) or,     possibly execute arbitrary code, when a STA works in     IBSS mode (allows connecting stations together without     the use of an AP) and connects to another     STA.(CVE-2019-14897)An out-of-bounds memory write issue     was found in the Linux Kernel, version 3.13 through     5.4, in the way the Linux kernel's KVM hypervisor     handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request     to get CPUID features emulated by the KVM hypervisor. A     user or process able to access the '/dev/kvm' device     could use this flaw to crash the system, resulting in a     denial of service.(CVE-2019-19332)Improper invalidation     for page table updates by a virtual guest operating     system for multiple Intel(R) Processors may allow an     authenticated user to potentially enable denial of     service of the host system via local     access.(CVE-2018-12207)In the Android kernel in the     video driver there is a use after free due to a race     condition. This could lead to local escalation of     privilege with no additional execution privileges     needed. User interaction is not needed for     exploitation.(CVE-2019-9458)In the AppleTalk subsystem     in the Linux kernel before 5.1, there is a potential     NULL pointer dereference because register_snap_client     may return NULL. This will lead to denial of service in     net/appletalk/aarp.c and net/appletalk/ddp.c, as     demonstrated by unregister_snap_client, aka     CID-9804501fa122.(CVE-2019-19227)In the Linux kernel     5.0.21, mounting a crafted btrfs filesystem image,     performing some operations, and then making a syncfs     system call can lead to a use-after-free in
    __mutex_lock in kernel/locking/mutex.c. This is related     to mutex_can_spin_on_owner in kernel/locking/mutex.c,
    __btrfs_qgroup_free_meta in fs/btrfs/qgroup.c, and     btrfs_insert_delayed_items in     fs/btrfs/delayed-inode.c.(CVE-2019-19813)In the Linux     kernel 5.4.0-rc2, there is a use-after-free (read) in     the __blk_add_trace function in kernel/trace/blktrace.c     (which is used to fill out a blk_io_trace structure and     place it in a per-cpu sub-buffer).(CVE-2019-19768)In     the Linux kernel before 5.0.6, there is a NULL pointer     dereference in drop_sysctl_table() in     fs/proc/proc_sysctl.c, related to put_links, aka     CID-23da9588037e.(CVE-2019-20054)In the Linux kernel     before 5.2.9, there is an info-leak bug that can be     caused by a malicious USB device in the drivers/     net/can/usb/peak_usb/pcan_usb_pro.c driver, aka     CID-ead16e53c2f0.(CVE-2019-19536)In the Linux kernel     before 5.3.11, there is an info-leak bug that can be     caused by a malicious USB device in the drivers/     net/can/usb/peak_usb/pcan_usb_core.c driver, aka     CID-f7a1337f0d29.(CVE-2019-19534)In the Linux kernel     before 5.3.6, there is a use-after-free bug that can be     caused by a malicious USB device in the drivers/     net/ieee802154/atusb.c driver, aka     CID-7fd25e6fc035.(CVE-2019-19525)Insufficient access     control in a subsystem for Intel (R) processor graphics     in 6th, 7th, 8th and 9th Generation Intel(R) Core(TM)     Processor Families Intel(R) Pentium(R) Processor J, N,     Silver and Gold Series Intel(R) Celeron(R) Processor J,     N, G3900 and G4900 Series Intel(R) Atom(R) Processor A     and E3900 Series Intel(R) Xeon(R) Processor E3-1500 v5     and v6, E-2100 and E-2200 Processor Families Intel(R)     Graphics Driver for Windows before 26.20.100.6813 (DCH)     or 26.20.100.6812 and before 21.20.x.5077     (aka15.45.5077), i915 Linux Driver for Intel(R)     Processor Graphics before versions 5.4-rc7, 5.3.11,     4.19.84, 4.14.154, 4.9.201, 4.4.201 may allow an     authenticated user to potentially enable escalation of     privilege via local access.(CVE-2019-0155)Insufficient     input validation in Kernel Mode Driver in Intel(R) i915     Graphics for Linux before version 5.0 may allow an     authenticated user to potentially enable escalation of     privilege via local     access.(CVE-2019-11085)kernel/sched/fair.c in the Linux     kernel before 5.3.9, when cpu.cfs_quota_us is used     (e.g., with Kubernetes), allows attackers to cause a     denial of service against non-cpu-bound applications by     generating a workload that triggers unwanted slice     expiration, aka CID-de53fd7aedb1. (In other words,     although this slice expiration would typically be seen     with benign workloads, it is possible that an attacker     could calculate how many stray requests are required to     force an entire Kubernetes cluster into a     low-performance state caused by slice expiration, and     ensure that a DDoS attack sent that number of stray     requests. An attack does not affect the stability of     the kernel it only causes mismanagement of application     execution.)(CVE-2019-19922)The evm_verify_hmac function     in security/integrity/evm/evm_main.c in the Linux     kernel before 4.5 does not properly copy data, which     makes it easier for local users to forge MAC values via     a timing side-channel attack.(CVE-2016-2085)The     pcpu_embed_first_chunk function in mm/percpu.c in the     Linux kernel through 4.14.14 allows local users to     obtain sensitive address information by reading dmesg     data from a 'pages/cpu' printk call.(CVE-2018-5995)TSX     Asynchronous Abort condition on some CPUs utilizing     speculative execution may allow an authenticated user     to potentially enable information disclosure via a side     channel with local access.(CVE-2019-11135)An issue was     discovered in drivers/scsi/aacraid/commctrl.c in the     Linux kernel before 4.13. There is potential exposure     of kernel stack memory because aac_send_raw_srb does     not initialize the reply structure.(CVE-2017-18549)An     issue was discovered in drivers/scsi/aacraid/commctrl.c     in the Linux kernel before 4.13. There is potential     exposure of kernel stack memory because     aac_get_hba_info does not initialize the hbainfo     structure.(CVE-2017-18550)In the Linux kernel through     4.15.4, the floppy driver reveals the addresses of     kernel functions and global variables using printk     calls within the function show_floppy in     drivers/block/floppy.c. An attacker can read this     information from dmesg and use the addresses to find     the locations of kernel code and data and bypass kernel     security protections such as KASLR.(CVE-2018-7273)A     heap-based buffer overflow was discovered in the Linux     kernel, all versions 3.x.x and 4.x.x before 4.18.0, in     Marvell WiFi chip driver. The flaw could occur when the     station attempts a connection negotiation during the     handling of the remote devices country settings. This     could allow the remote device to cause a denial of     service (system crash) or possibly execute arbitrary     code.(CVE-2019-14895)The Linux kernel before 5.4.1 on     powerpc allows Information Exposure because the     Spectre-RSB mitigation is not in place for all     applicable CPUs, aka CID-39e72bf96f58. This is related     to arch/powerpc/kernel/entry_64.S and     arch/powerpc/kernel/security.c.(CVE-2019-18660)In the     Linux kernel 5.0.21, mounting a crafted ext4 filesystem     image, performing some operations, and unmounting can     lead to a use-after-free in ext4_put_super in     fs/ext4/super.c, related to dump_orphan_list in     fs/ext4/super.c.(CVE-2019-19447)In the Linux kernel     through 5.4.6, there is a NULL pointer dereference in     drivers/scsi/libsas/sas_discover.c because of     mishandling of port disconnection during discovery,     related to a PHY down race condition, aka     CID-f70267f379b5.(CVE-2019-19965)In the Linux kernel     before 5.1.6, there is a use-after-free in cpia2_exit()     in drivers/media/usb/cpia2/cpia2_v4l.c that will cause     denial of service, aka     CID-dea37a972655.(CVE-2019-19966)An exploitable     denial-of-service vulnerability exists in the Linux     kernel prior to mainline 5.3. An attacker could exploit     this vulnerability by triggering AP to send IAPP     location updates for stations before the required     authentication process has completed. This could lead     to different denial-of-service scenarios, either by     causing CAM table attacks, or by leading to traffic     flapping if faking already existing clients in other     nearby APs of the same wireless infrastructure. An     attacker can forge Authentication and Association     Request packets to trigger this     vulnerability.(CVE-2019-5108)mwifiex_tm_cmd in drivers/     net/wireless/marvell/mwifiex/cfg80211.c in the Linux     kernel before 5.1.6 has some error-handling cases that     did not free allocated hostcmd memory, aka     CID-003b686ace82. This will cause a memory leak and     denial of service.(CVE-2019-20095)

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.

This update for the Linux Kernel 4.4.180-94_107 fixes several issues.

The following security issues were fixed :

CVE-2020-14331: Fixed a buffer over-write in vgacon_scroll (bsc#1174247).

CVE-2019-0155: Fixed a privilege escalation in the i915 graphics driver (bsc#1173663).

CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c (bsc#1173659).

CVE-2019-9458: Fixed a use-after-free in media/v4l (bsc#1173963).

CVE-2020-11668: Fixed a memory corruption issue in the Xirlink camera USB driver (bsc#1173942).

CVE-2019-19447: Fixed a use-after-free in ext4_put_super (bsc#1173869).

CVE-2019-18680: Fixed a NULL pointer dereference in rds_tcp_kill_sock() in net/rds/tcp.c (bsc#1173867).

CVE-2019-14901: Fixed a heap overflow in the Marvell WiFi driver (bsc#1173661).

CVE-2019-14895: Fixed a heap-based buffer overflow in the Marvell WiFi driver (bsc#1173100).

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.

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4060 advisory.

  - An issue was discovered in drivers/i2c/i2c-core-smbus.c in the Linux kernel before 4.14.15. There is an     out of bounds write in the function i2c_smbus_xfer_emulated. (CVE-2017-18551)

  - An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout()     and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free. (CVE-2018-20836)

  - An issue was discovered in dlpar_parse_cc_property in arch/powerpc/platforms/pseries/dlpar.c in the Linux     kernel through 5.1.6. There is an unchecked kstrdup of prop->name, which might allow an attacker to cause     a denial of service (NULL pointer dereference and system crash). (CVE-2019-12614)

  - An issue was discovered in the Linux kernel before 5.2.3. There is a NULL pointer dereference caused by a     malicious USB device in the drivers/media/usb/zr364xx/zr364xx.c driver. (CVE-2019-15217)

  - In the Linux kernel before 5.1.13, there is a memory leak in drivers/scsi/libsas/sas_expander.c when SAS     expander discovery fails. This will cause a BUG and denial of service. (CVE-2019-15807)

  - An issue was discovered in the Linux kernel before 5.0.5. There is a use-after-free issue when     hci_uart_register_dev() fails in hci_uart_set_proto() in drivers/bluetooth/hci_ldisc.c. (CVE-2019-15917)

  - drivers/net/fjes/fjes_main.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value,     leading to a NULL pointer dereference. (CVE-2019-16231)

  - drivers/scsi/qla2xxx/qla_os.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value,     leading to a NULL pointer dereference. (CVE-2019-16233)

  - In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c when     register_netdev() fails to register sitn->fb_tunnel_dev, which may cause denial of service, aka     CID-07f12b26e21a. (CVE-2019-16994)

  - ieee802154_create in net/ieee802154/socket.c in the AF_IEEE802154 network module in the Linux kernel     through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket,     aka CID-e69dbd4619e7. (CVE-2019-17053)

  - base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through     5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka     CID-b91ee4aa2a21. (CVE-2019-17055)

  - A memory leak in the ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c in the Linux kernel     through 5.3.9 allows attackers to cause a denial of service (memory consumption), aka CID-128c66429247.
    (CVE-2019-18808)

  - A memory leak in the __ipmi_bmc_register() function in drivers/char/ipmi/ipmi_msghandler.c in the Linux     kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     ida_simple_get() failure, aka CID-4aa7afb0ee20. NOTE: third parties dispute the relevance of this because     an attacker cannot realistically control this failure at probe time (CVE-2019-19046)

  - A memory leak in the nl80211_get_ftm_responder_stats() function in net/wireless/nl80211.c in the Linux     kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     nl80211hdr_put() failures, aka CID-1399c59fa929. NOTE: third parties dispute the relevance of this because     it occurs on a code path where a successful allocation has already occurred (CVE-2019-19055)

  - A memory leak in the alloc_sgtable() function in drivers/net/wireless/intel/iwlwifi/fw/dbg.c in the Linux     kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     alloc_page() failures, aka CID-b4b814fec1a5. (CVE-2019-19058)

  - Multiple memory leaks in the iwl_pcie_ctxt_info_gen3_init() function in     drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c in the Linux kernel through 5.3.11 allow     attackers to cause a denial of service (memory consumption) by triggering iwl_pcie_init_fw_sec() or     dma_alloc_coherent() failures, aka CID-0f4f199443fa. (CVE-2019-19059)

  - A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through     5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering     crypto_report_alg() failures, aka CID-ffdde5932042. (CVE-2019-19062)

  - Two memory leaks in the rtl_usb_probe() function in drivers/net/wireless/realtek/rtlwifi/usb.c in the     Linux kernel through 5.3.11 allow attackers to cause a denial of service (memory consumption), aka     CID-3f9361695113. (CVE-2019-19063)

  - An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way     the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID     features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use     this flaw to crash the system, resulting in a denial of service. (CVE-2019-19332)

  - In the Linux kernel 5.0.21, mounting a crafted ext4 filesystem image, performing some operations, and     unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c, related to dump_orphan_list     in fs/ext4/super.c. (CVE-2019-19447)

  - In the Linux kernel before 5.3.7, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79. (CVE-2019-19523)

  - In the Linux kernel before 5.3.12, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/input/ff-memless.c driver, aka CID-fa3a5a1880c9. (CVE-2019-19524)

  - In the Linux kernel before 5.2.10, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/class/cdc-acm.c driver, aka CID-c52873e5a1ef. (CVE-2019-19530)

  - In the Linux kernel before 5.3.11, there is an info-leak bug that can be caused by a malicious USB device     in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver, aka CID-f7a1337f0d29. (CVE-2019-19534)

  - In the Linux kernel before 5.2.10, there is a race condition bug that can be caused by a malicious USB     device in the USB character device driver layer, aka CID-303911cfc5b9. This affects     drivers/usb/core/file.c. (CVE-2019-19537)

  - The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors     in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka     CID-4ea99936a163. (CVE-2019-19767)

  - In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free caused by erroneous code     refactoring, aka CID-e7af6307a8a5. This is related to snd_timer_open and snd_timer_close_locked. The     timeri variable was originally intended to be for a newly created timer instance, but was used for a     different purpose after refactoring. (CVE-2019-19807)

  - In the Linux kernel before 5.0.6, there is a NULL pointer dereference in drop_sysctl_table() in     fs/proc/proc_sysctl.c, related to put_links, aka CID-23da9588037e. (CVE-2019-20054)

  - mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c in the Linux kernel before 5.1.6 has     some error-handling cases that did not free allocated hostcmd memory, aka CID-003b686ace82. This will     cause a memory leak and denial of service. (CVE-2019-20095)

  - In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode     table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7. (CVE-2019-20636)

  - In the Android kernel in i2c driver there is a possible out of bounds write due to memory corruption. This     could lead to local escalation of privilege with System execution privileges needed. User interaction is     not needed for exploitation. (CVE-2019-9454)

  - In the Android kernel in the video driver there is a use after free due to a race condition. This could     lead to local escalation of privilege with no additional execution privileges needed. User interaction is     not needed for exploitation. (CVE-2019-9458)

  - There is a use-after-free in kernel versions before 5.5 due to a race condition between the release of     ptp_clock and cdev while resource deallocation. When a (high privileged) process allocates a ptp device     file (like /dev/ptpX) and voluntarily goes to sleep. During this time if the underlying device is removed,     it can cause an exploitable condition as the process wakes up to terminate and clean all attached files.
    The system crashes due to the cdev structure being invalid (as already freed) which is pointed to by the     inode. (CVE-2020-10690)

  - A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an     attacker with a local account to crash a trivial program and exfiltrate private kernel data.
    (CVE-2020-10732)

  - A flaw was found in the Linux kernel. An index buffer overflow during Direct IO write leading to the NFS     client to crash. In some cases, a reach out of the index after one memory allocation by kmalloc will cause     a kernel panic. The highest threat from this vulnerability is to data confidentiality and system     availability. (CVE-2020-10742)

  - A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it     incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly     only validate the first netlink message in the skb and allow or deny the rest of the messages within the     skb with the granted permission without further processing. (CVE-2020-10751)

  - In the Linux kernel before 5.5.8, get_raw_socket in drivers/vhost/net.c lacks validation of an sk_family     field, which might allow attackers to trigger kernel stack corruption via crafted system calls.
    (CVE-2020-10942)

  - An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-     based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-     aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the     issue is a bug in parsing mount options which can only be specified by a privileged user, so triggering     the bug does not grant any powers not already held. (CVE-2020-11565)

  - An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a     certain failure case, aka CID-83c6f2390040. (CVE-2020-12770)

  - A signal access-control issue was discovered in the Linux kernel before 5.6.5, aka CID-7395ea4e65c2.
    Because exec_id in include/linux/sched.h is only 32 bits, an integer overflow can interfere with a     do_notify_parent protection mechanism. A child process can send an arbitrary signal to a parent process in     a different security domain. Exploitation limitations include the amount of elapsed time before an integer     overflow occurs, and the lack of scenarios where signals to a parent process present a substantial     operational threat. (CVE-2020-12826)

  - An out-of-bounds memory write flaw was found in how the Linux kernel's Voice Over IP H.323 connection     tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote     user to crash the system, causing a denial of service. The highest threat from this vulnerability is to     confidentiality, integrity, as well as system availability. (CVE-2020-14305)

  - A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN     and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't     correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would     allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this     vulnerability is to data confidentiality. (CVE-2020-1749)

  - A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest     when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into     accessing sensitive L1 resources that should be inaccessible to the L2 guest. (CVE-2020-2732)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in     drivers/tty/vt/vt.c. (CVE-2020-8647)

  - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vgacon_invert_region     function in drivers/video/console/vgacon.c. (CVE-2020-8649)

  - An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to     a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it,     aka CID-2e90ca68b0d2. (CVE-2020-9383)

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4609 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: use after free due to race condition in the video driver leads to local privilege escalation     (CVE-2019-9458)

    * kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

    * kernel: out-of-bounds access in function hclge_tm_schd_mode_vnet_base_cfg (CVE-2019-15925)

    * kernel: memory leak in ccp_run_sha_cmd() (CVE-2019-18808)

    * kernel: Denial Of Service in the __ipmi_bmc_register()  (CVE-2019-19046)

    * kernel: out-of-bounds write in ext4_xattr_set_entry in fs/ext4/xattr.c (CVE-2019-19319)

    * Kernel: kvm: OOB memory write via kvm_dev_ioctl_get_cpuid (CVE-2019-19332)

    * kernel: use-after-free in ext4_put_super (CVE-2019-19447)

    * kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free     (CVE-2019-19524)

    * kernel: race condition caused by a malicious USB device in the USB character device driver layer     (CVE-2019-19537)

    * kernel: use-after-free in serial_ir_init_module() (CVE-2019-19543)

    * kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry (CVE-2019-19767)

    * kernel: use-after-free in debugfs_remove (CVE-2019-19770)

    * kernel: out-of-bounds write via crafted keycode table (CVE-2019-20636)

    * kernel: possible use-after-free due to a race condition in cdev_get of char_dev.c (CVE-2020-0305)

    * kernel: out-of-bounds read in in vc_do_resize (CVE-2020-8647)

    * kernel: use-after-free in n_tty_receive_buf_common (CVE-2020-8648)

    * kernel: invalid read location in vgacon_invert_region (CVE-2020-8649)

    * kernel: uninitialized kernel data leak in userspace coredumps (CVE-2020-10732)

    * kernel: SELinux netlink permission check bypass (CVE-2020-10751)

    * kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

    * kernel: mishandles invalid descriptors in drivers/media/usb/gspca/xirlink_cit.c (CVE-2020-11668)

    * kernel: out-of-bounds write in xdp_umem_reg (CVE-2020-12659)

    * kernel: sg_write function lacks an sg_remove_request call in a certain failure case (CVE-2020-12770)

    * kernel: possible to send arbitrary signals to a privileged (suidroot) parent process (CVE-2020-12826)

    * kernel: referencing inode of removed superblock in get_futex_key() causes UAF (CVE-2020-14381)

    * kernel: soft-lockups in iov_iter_copy_from_user_atomic() could result in DoS (CVE-2020-25641)

    * kernel: kernel pointer leak due to WARN_ON statement in video driver leads to local information     disclosure (CVE-2019-9455)

    * kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c (CVE-2019-16231)

    * kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c (CVE-2019-16233)

    * kernel: memory leak in  af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c     (CVE-2019-18809)

    * kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() (CVE-2019-19056)

    * kernel: memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for DoS     (CVE-2019-19062)

    * kernel: Two memory leaks in the rtl_usb_probe() (CVE-2019-19063)

    * kernel: A memory leak in the rtl8xxxu_submit_int_urb() (CVE-2019-19068)

    * kernel: A memory leak in the predicate_parse() function in kernel/trace/trace_events_filter.c allows for     a DoS (CVE-2019-19072)

    * kernel: information leak bug caused  by a malicious USB device in the drivers/media/usb/ttusb-     dec/ttusb_dec.c (CVE-2019-19533)

    * kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c (CVE-2019-20054)

    * kernel: possibility of memory disclosure when reading the file /proc/sys/kernel/rh_features     (CVE-2020-10774)

    * kernel: vhost-net: stack overflow in get_raw_socket while checking sk_family field (CVE-2020-10942)

    * kernel: sync of excessive duration via an XFS v5 image with crafted metadata (CVE-2020-12655)

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 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2854 advisory.

    The kernel-alt packages provide the Linux kernel version 4.x.

    Security Fix(es):

    * kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

    * Kernel: ppc: kvm: conflicting use of HSTATE_HOST_R1 to store r1 state leads to host stack corruption     (CVE-2020-8834)

    * Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

    * kernel: use after free due to race condition in the video driver leads to local privilege escalation     (CVE-2019-9458)

    * kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c     (CVE-2019-11811)

    * kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

    * kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c (CVE-2019-18808)

    * kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c     and fs/ext4/super.c (CVE-2019-19767)

    * kernel: an out-of-bounds write via crafted keycode table (CVE-2019-20636)

    * kernel: use-after-free read in napi_gro_frags() in the Linux kernel (CVE-2020-10720)

    * kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

    * kernel: A memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for a DoS     (CVE-2019-19062)

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

    Bug Fix(es):

    * XFS: Metadata corruption detected at xfs_attr3_leaf_read_verify [rhel-alt-7.6.z] (BZ#1830836)

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.

遠端 Oracle Linux 6/7 主機上安裝的套件受到 ELSA-2021-9442 公告中提及的多個弱點影響。

  - Android 核心的視訊驅動程式中存在釋放後使用問題，這是爭用情形所致。這可能會導致本機權限提升，且不需額外的執行權限。不需使用者互動即可惡意利用。(CVE-2019-9458)

  - char_dev.c 的 cdev_get 中存在爭用情形，因而可能發生釋放後使用問題。這可能會導致本機權限提升，並需要系統執行權限。 不需使用者互動即可惡意利用。產品：AndroidVersions：Android-10Android ID：A-153467744 (CVE-2020-0305)

  - 在 Pixel C USB 監視器驅動程式的 Android 核心中，因為缺少邊界檢查，可能會造成超出邊界 (OOB) 寫入。這可能會導致本機權限提升，並需要系統執行權限。 不需使用者互動即可惡意利用。(CVE-2019-9456)

  - 在 nl80211_policy policy of nl80211.c 中，可能因缺少邊界檢查而造成超出邊界的讀取。這可能導致需要系統執行權限的本機資訊洩漏。不需使用者互動即可惡意利用。產品：AndroidVersions：Android 核心 Android ID：
    A-119770583 (CVE-2020-27068)

  - 在 l2tp_session_delete 和 l2tp_core.c 的相關函式中，可能因釋放後使用而發生記憶體損毀。這可能會導致本機權限提升，並需要系統執行權限。 
    不需使用者互動即可惡意利用。產品：Android 版本：Android 核心 Android ID：
    A-152735806 (CVE-2020-0429)

  - 在 5.8.10 之前的 Linux 核心中，vgacon 子系統不會正確處理軟體回溯。存在一個 vgacon_scrolldelta 超出邊界讀取問題，亦稱 CID-973c096f6a85。(CVE-2020-28097)

  - 5.12.10 之前的 Linux 核心中的 net/can/bcm.c 由於部分資料結構未初始化，允許本機使用者從核心堆疊記憶體取得敏感資訊。(CVE-2021-34693)

  - 核心：net/can/bcm.c 中存在爭用情形，可導致本機權限提升 (CVE-2021-3609)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 OracleVM 系統缺少可解決安全性更新的必要修補程式：

  - 在 Pixel C USB 監視器驅動程式的 Android 核心中，因為缺少邊界檢查，可能會造成超出邊界 (OOB) 寫入。這可能會導致本機權限提升，並需要系統執行權限。 不需使用者互動即可惡意利用。(CVE-2019-9456)

  - Android 核心的視訊驅動程式中存在釋放後使用問題，這是爭用情形所致。這可能會導致本機權限提升，且不需額外的執行權限。不需使用者互動即可惡意利用。(CVE-2019-9458)

  - char_dev.c 的 cdev_get 中存在爭用情形，因而可能發生釋放後使用問題。這可能會導致本機權限提升，並需要系統執行權限。 不需使用者互動即可惡意利用。產品：AndroidVersions：Android-10Android ID：A-153467744 (CVE-2020-0305)

  - 在 l2tp_session_delete 和 l2tp_core.c 的相關函式中，可能因釋放後使用而發生記憶體損毀。這可能會導致本機權限提升，並需要系統執行權限。 
    不需使用者互動即可惡意利用。產品：Android 版本：Android 核心 Android ID：
    A-152735806 (CVE-2020-0429)

  - 在 nl80211.c 的 nl80211_policy 策略中，可能因缺少邊界檢查而造成超出邊界的讀取。這可能導致需要系統執行權限的本機資訊洩漏。不需使用者互動即可惡意利用。產品：AndroidVersions：Android 核心 Android ID：
    A-119770583 (CVE-2020-27068)

  - 在 5.8.10 之前的 Linux 核心中，vgacon 子系統不會正確處理軟體回溯。存在一個 vgacon_scrolldelta 超出邊界讀取問題，亦稱 CID-973c096f6a85。(CVE-2020-28097)

  - 5.12.10 之前的 Linux 核心中的 net/can/bcm.c 由於部分資料結構未初始化，允許本機使用者從核心堆疊記憶體取得敏感資訊。(CVE-2021-34693)

  - 在 Linux 核心的 CAN BCM 網路通訊協定中發現一個缺陷，本機攻擊者可濫用 CAN 子系統中的缺陷來損毀記憶體、使系統當機或提升權限。此爭用情形存在於 Linux 核心的 net/can/bcm.c 中，允許將本機權限提升至 root 級別。
    (CVE-2021-3609)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Redhat Enterprise Linux 7 主機上安裝的套件受到 RHSA-2020: 4062 公告中所提及的多個弱點影響。

  - 核心：drivers/i2c/i2c-core-smbus.c 的 i2c_smbus_xfer_emulated 函式中存在超出邊界寫入問題 (CVE-2017-18551)

  - 核心：在 drivers/scsi/libsas/sas_expander.c 中，smp_task_timedout () 和 smp_task_done() 的爭用情形會導致釋放後使用 (CVE-2018-20836)

  - 核心：drivers/media/usb/zr364xx/zr364xx.c 驅動程式中的 null 指標解除參照問題 (CVE-2019-15217)

  - 核心：drivers/scsi/libsas/sas_expander.c 中的記憶體洩漏問題 (CVE-2019-15807)

  - 核心：drivers/bluetooth/hci_ldisc.c 中的釋放後使用問題 (CVE-2019-15917)

  - 核心：drivers/net/fjes/fjes_main.c 中的 null 指標解除參照問題 (CVE-2019-16231)

  - 核心：drivers/scsi/qla2xxx/qla_os.c 中的 null 指標解除參照問題 (CVE-2019-16233)

  - 核心：sit_init_net() in net/ipv6/sit.c 中的記憶體洩漏問題 (CVE-2019-16994)

  - 核心：無權限使用者可在 AF_IEEE802154 網路通訊協定中建立 RAW 通訊端 (CVE-2019-17053)

  - 核心：無權限的使用者可在 AF_ISDN 網路通訊協定中建立 RAW 通訊端 (CVE-2019-17055)

  - 核心：drivers/crypto/ccp/ccp-ops.c 的 ccp_run_sha_cmd() 函式中存在記憶體洩漏問題 (CVE-2019-18808)

  - 核心：drivers/char/ipmi/ipmi_msghandler.c 的 __ipmi_bmc_register() 函式中存在拒絕服務問題 (CVE-2019-19046)

  - 核心：net/wireless/nl80211.c 的 nl80211_get_ftm_responder_stats() 函式中存在記憶體洩漏問題，會導致 DoS (CVE-2019-19055)

  - 核心：drivers/net/wireless/intel/iwlwifi/fw/dbg.c 的 alloc_sgtable() 函式中存在記憶體洩漏問題，會導致 DoS (CVE-2019-19058)

  - 核心：drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c 的iwl_pcie_ctxt_info_gen_gen3_init() 函式中存在多個記憶體洩漏問題，會導致 DoS (CVE-2019-19059)

  - 核心：crypto/crypto_user_base.c 的 crypto_report() 函式中存在記憶體洩漏問題，可導致 DoS (CVE-2019-19062)

  - 核心：drivers/net/wireless/realtek/rtlwifi/usb.c 的 rtl_usb_probe() 函式中有兩個記憶體洩漏問題，會導致 DoS (CVE-2019-19063)

  - 核心：kvm：透過 kvm_dev_ioctl_get_cpuid 造成 OOB 記憶體寫入 (CVE-2019-19332)

  - 核心：掛載特別構建的 ext4 檔案系統映像、執行某些操作和卸載，可導致在 fs/ext4/super.c 的 ext4_put_super 中發生釋放後使用 (CVE-2019-19447)

  - 核心：惡意 USB 裝置可在 drivers/usb/misc/adutux.c 驅動程式中造成釋放後使用 (CVE-2019-19523)

  - 核心：drivers/input/ff-memless.c 中的惡意 USB 裝置可導致釋放後使用 (CVE-2019-19524)

  - 核心：drivers/usb/class/cdc-acm.c 驅動程式中的惡意 USB 裝置造成釋放後使用 (CVE-2019-19530)

  - 核心：由 drivers/net/can/usb/peak_usb/pcan_usb_core.c 驅動程式中的惡意 USB 裝置造成的資訊洩漏錯誤 (CVE-2019-19534)

  - 核心：USB 字元裝置驅動程式層中的惡意 USB 裝置會造成爭用情形 (CVE-2019-19537)

  - 核心：__ext4_expand_extra_isize 和 ext4_xattr_set_entry 中與 fs/ext4 inode.c 和 fs/ext4/super.c 相關的釋放後使用問題 (CVE-2019-19767)

  - 核心：sound/core/timer.c 中存在釋放後使用問題 (CVE-2019-19807)

  - 核心：在 fs/proc/proc_sysctl.c 的 drop_sysctl_table() 中發生 NULL 指標解除參照 (CVE-2019-20054)

  - 核心：drivers/net/wireless/marvell/mwifiex/cfg80211.c 的 mwifiex_tm_cmd 中存在記憶體洩漏 (CVE-2019-20095)

  - 核心：透過特製的鍵碼表造成超出邊界寫入問題 (CVE-2019-20636)

  - 核心：i2c 驅動程式中的超出邊界寫入會導致本機權限提升 (CVE-2019-9454)

  - 核心：視訊驅動程式中的爭用情形造成釋放後使用，進而導致本機權限提升 (CVE-2019-9458)

  - 核心：在 PTP 裝置的 chardev 開啟時移除該裝置，導致 cdev_put() 中出現釋放後使用 (CVE-2020-10690)

  - 核心：使用者空間 coredump 中的未初始化核心資料洩漏 (CVE-2020-10732)

  - 核心：由於 Direct IO 寫入期間索引緩衝區溢位導致核心錯誤，進而造成 NFS 用戶端當機 (CVE-2020-10742)

  - 核心：繞過 SELinux netlink 權限檢查 (CVE-2020-10751)

  - 核心：vhost_net：在檢查 sk_family 欄位時，get_raw_socket 中發生堆疊溢位 (CVE-2020-10942)

  - 核心：mm/mempolicy.c 的 mpol_parse_str 函式中有超出邊界寫入問題 (CVE-2020-11565)

  - 核心：sg_write 函式在特定失敗案例中缺少 sg_remove_request 呼叫 (CVE-2020-12770)

  - 核心：可能會傳送任意訊號至有權限的 (suidroot) 父處理程序 (CVE-2020-12826)

  - 核心：Voice over IP nf_conntrack_h323 模組中的記憶體損毀 (CVE-2020-14305)

  - 核心：部分 ipv6 通訊協定未透過 ipsec 通道加密 (CVE-2020-1749)

  - 核心：kvm：nVMX：L2 客體可能誘使 L0 Hypervisor 存取 L1 敏感資源 (CVE-2020-2732)

  - 核心：drivers/tty/vt/vt.c 的 vc_do_resize 函式中有超出邊界讀取問題 (CVE-2020-8647)

  - 核心：drivers/video/console/vgacon.c 的 vgacon_invert_region 函式中有無效讀取位置 (CVE-2020-8649)

  - 核心：drivers/block/floppy.c 的 set_fdc 中存在超出邊界讀取 (CVE-2020-9383)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 Redhat Enterprise Linux 7 主機上安裝的套件受到 RHSA-2020: 4060 公告中所提及的多個弱點影響。

  - 核心：drivers/i2c/i2c-core-smbus.c 的 i2c_smbus_xfer_emulated 函式中存在超出邊界寫入問題 (CVE-2017-18551)

  - 核心：在 drivers/scsi/libsas/sas_expander.c 中，smp_task_timedout () 和 smp_task_done() 的爭用情形會導致釋放後使用 (CVE-2018-20836)

  - 核心：arch/powerrc/platforms/pseries/dlpar.c 的 dlpar_parse_cc_property 中的 NULL 指標解除參照可導致拒絕服務 (CVE-2019-12614)

  - 核心：drivers/media/usb/zr364xx/zr364xx.c 驅動程式中的 null 指標解除參照問題 (CVE-2019-15217)

  - 核心：drivers/scsi/libsas/sas_expander.c 中的記憶體洩漏問題 (CVE-2019-15807)

  - 核心：drivers/bluetooth/hci_ldisc.c 中的釋放後使用問題 (CVE-2019-15917)

  - 核心：drivers/net/fjes/fjes_main.c 中的 null 指標解除參照問題 (CVE-2019-16231)

  - 核心：drivers/scsi/qla2xxx/qla_os.c 中的 null 指標解除參照問題 (CVE-2019-16233)

  - 核心：sit_init_net() in net/ipv6/sit.c 中的記憶體洩漏問題 (CVE-2019-16994)

  - 核心：無權限使用者可在 AF_IEEE802154 網路通訊協定中建立 RAW 通訊端 (CVE-2019-17053)

  - 核心：無權限的使用者可在 AF_ISDN 網路通訊協定中建立 RAW 通訊端 (CVE-2019-17055)

  - 核心：drivers/crypto/ccp/ccp-ops.c 的 ccp_run_sha_cmd() 函式中存在記憶體洩漏問題 (CVE-2019-18808)

  - 核心：drivers/char/ipmi/ipmi_msghandler.c 的 __ipmi_bmc_register() 函式中存在拒絕服務問題 (CVE-2019-19046)

  - 核心：net/wireless/nl80211.c 的 nl80211_get_ftm_responder_stats() 函式中存在記憶體洩漏問題，會導致 DoS (CVE-2019-19055)

  - 核心：drivers/net/wireless/intel/iwlwifi/fw/dbg.c 的 alloc_sgtable() 函式中存在記憶體洩漏問題，會導致 DoS (CVE-2019-19058)

  - 核心：drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c 的iwl_pcie_ctxt_info_gen_gen3_init() 函式中存在多個記憶體洩漏問題，會導致 DoS (CVE-2019-19059)

  - 核心：crypto/crypto_user_base.c 的 crypto_report() 函式中存在記憶體洩漏問題，可導致 DoS (CVE-2019-19062)

  - 核心：drivers/net/wireless/realtek/rtlwifi/usb.c 的 rtl_usb_probe() 函式中有兩個記憶體洩漏問題，會導致 DoS (CVE-2019-19063)

  - 核心：kvm：透過 kvm_dev_ioctl_get_cpuid 造成 OOB 記憶體寫入 (CVE-2019-19332)

  - 核心：掛載特別構建的 ext4 檔案系統映像、執行某些操作和卸載，可導致在 fs/ext4/super.c 的 ext4_put_super 中發生釋放後使用 (CVE-2019-19447)

  - 核心：惡意 USB 裝置可在 drivers/usb/misc/adutux.c 驅動程式中造成釋放後使用 (CVE-2019-19523)

  - 核心：drivers/input/ff-memless.c 中的惡意 USB 裝置可導致釋放後使用 (CVE-2019-19524)

  - 核心：drivers/usb/class/cdc-acm.c 驅動程式中的惡意 USB 裝置造成釋放後使用 (CVE-2019-19530)

  - 核心：由 drivers/net/can/usb/peak_usb/pcan_usb_core.c 驅動程式中的惡意 USB 裝置造成的資訊洩漏錯誤 (CVE-2019-19534)

  - 核心：USB 字元裝置驅動程式層中的惡意 USB 裝置會造成爭用情形 (CVE-2019-19537)

  - 核心：__ext4_expand_extra_isize 和 ext4_xattr_set_entry 中與 fs/ext4 inode.c 和 fs/ext4/super.c 相關的釋放後使用問題 (CVE-2019-19767)

  - 核心：sound/core/timer.c 中存在釋放後使用問題 (CVE-2019-19807)

  - 核心：在 fs/proc/proc_sysctl.c 的 drop_sysctl_table() 中發生 NULL 指標解除參照 (CVE-2019-20054)

  - 核心：drivers/net/wireless/marvell/mwifiex/cfg80211.c 的 mwifiex_tm_cmd 中存在記憶體洩漏 (CVE-2019-20095)

  - 核心：透過特製的鍵碼表造成超出邊界寫入問題 (CVE-2019-20636)

  - 核心：i2c 驅動程式中的超出邊界寫入會導致本機權限提升 (CVE-2019-9454)

  - 核心：視訊驅動程式中的爭用情形造成釋放後使用，進而導致本機權限提升 (CVE-2019-9458)

  - 核心：在 PTP 裝置的 chardev 開啟時移除該裝置，導致 cdev_put() 中出現釋放後使用 (CVE-2020-10690)

  - 核心：使用者空間 coredump 中的未初始化核心資料洩漏 (CVE-2020-10732)

  - 核心：由於 Direct IO 寫入期間索引緩衝區溢位導致核心錯誤，進而造成 NFS 用戶端當機 (CVE-2020-10742)

  - 核心：繞過 SELinux netlink 權限檢查 (CVE-2020-10751)

  - 核心：vhost_net：在檢查 sk_family 欄位時，get_raw_socket 中發生堆疊溢位 (CVE-2020-10942)

  - 核心：mm/mempolicy.c 的 mpol_parse_str 函式中有超出邊界寫入問題 (CVE-2020-11565)

  - 核心：sg_write 函式在特定失敗案例中缺少 sg_remove_request 呼叫 (CVE-2020-12770)

  - 核心：可能會傳送任意訊號至有權限的 (suidroot) 父處理程序 (CVE-2020-12826)

  - 核心：Voice over IP nf_conntrack_h323 模組中的記憶體損毀 (CVE-2020-14305)

  - 核心：部分 ipv6 通訊協定未透過 ipsec 通道加密 (CVE-2020-1749)

  - 核心：kvm：nVMX：L2 客體可能誘使 L0 Hypervisor 存取 L1 敏感資源 (CVE-2020-2732)

  - 核心：drivers/tty/vt/vt.c 的 vc_do_resize 函式中有超出邊界讀取問題 (CVE-2020-8647)

  - 核心：drivers/video/console/vgacon.c 的 vgacon_invert_region 函式中有無效讀取位置 (CVE-2020-8649)

  - 核心：drivers/block/floppy.c 的 set_fdc 中存在超出邊界讀取 (CVE-2020-9383)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

遠端 CentOS Linux 8 主機上安裝的套件受到 CESA-2020: 4431 公告中所提及的多個弱點影響。

  - 核心：arch/powerrc/platforms/pseries/dlpar.c 的 dlpar_parse_cc_property 中的 NULL 指標解除參照可導致拒絕服務 (CVE-2019-12614)

  - 核心：drivers/bluetooth/hci_ldisc.c 中的釋放後使用問題 (CVE-2019-15917)

  - 核心：hclge_tm_schd_mode_vnet_base_cfg 函式中存在超出邊界存取問題 (CVE-2019-15925)

  - 核心：drivers/net/fjes/fjes_main.c 中的 null 指標解除參照問題 (CVE-2019-16231)

  - 核心：drivers/scsi/qla2xxx/qla_os.c 中的 null 指標解除參照問題 (CVE-2019-16233)

  - 核心：drivers/crypto/ccp/ccp-ops.c 的 ccp_run_sha_cmd() 函式中存在記憶體洩漏問題 (CVE-2019-18808)

  - 核心：drivers/media/usb/dvb-usb/af9005.c 的 af9005_identify_state() 函式中存在記憶體洩漏問題 (CVE-2019-18809)

  - 核心：drivers/char/ipmi/ipmi_msghandler.c 的 __ipmi_bmc_register() 函式中存在拒絕服務問題 (CVE-2019-19046)

  - 核心：drivers/net/wireless/marvell/mwifiex/pcie.c 的 mwifiex_pcie_alloc_cmdrsp_buf() 函式中存在記憶體洩漏問題，可造成 DoS (CVE-2019-19056)

  - 核心：crypto/crypto_user_base.c 的 crypto_report() 函式中存在記憶體洩漏問題，可導致 DoS (CVE-2019-19062)

  - 核心：drivers/net/wireless/realtek/rtlwifi/usb.c 的 rtl_usb_probe() 函式中有兩個記憶體洩漏問題，會導致 DoS (CVE-2019-19063)

  - 核心：drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c 的 rtl8xxxu_submit_int_urb() 函式中存在記憶體洩漏問題，會導致 DoS (CVE-2019-19068)

  - 核心：kernel/trace/trace_events_filter.c 的 predicate_parse() 函式存在記憶體洩漏問題，會導致 DoS (CVE-2019-19072)

  - 核心：fs/ext4/xattr.c 中的 ext4_xattr_set_entry 存在超出邊界寫入問題 (CVE-2019-19319)

  - 核心：kvm：透過 kvm_dev_ioctl_get_cpuid 造成 OOB 記憶體寫入 (CVE-2019-19332)

  - 核心：掛載特別構建的 ext4 檔案系統映像、執行某些操作和卸載，可導致在 fs/ext4/super.c 的 ext4_put_super 中發生釋放後使用 (CVE-2019-19447)

  - 核心：drivers/input/ff-memless.c 中的惡意 USB 裝置可導致釋放後使用 (CVE-2019-19524)

  - 核心：惡意 USB 裝置可造成 drivers/media/usb/ttusb-dec/ttusb_dec.c 中發生資訊洩漏 (CVE-2019-19533)

  - 核心：USB 字元裝置驅動程式層中的惡意 USB 裝置會造成爭用情形 (CVE-2019-19537)

  - 核心：drivers/media/rc/serial_ir.c 的 serial_ir_init_module() 中存在釋放後使用問題 (CVE-2019-19543)

  - 核心：__ext4_expand_extra_isize 和 ext4_xattr_set_entry 中與 fs/ext4 inode.c 和 fs/ext4/super.c 相關的釋放後使用問題 (CVE-2019-19767)

  - 核心：在 fs/debugfs/inode.c 的 debugfs_remove 中存在釋放後使用問題 (CVE-2019-19770)

  - 核心：在 fs/proc/proc_sysctl.c 的 drop_sysctl_table() 中發生 NULL 指標解除參照 (CVE-2019-20054)

  - 核心：透過特製的鍵碼表造成超出邊界寫入問題 (CVE-2019-20636)

  - 核心：視訊驅動程式中的 WARN_ON 陳述式造成核心指標洩漏，進而導致本機資訊洩漏 (CVE-2019-9455)

  - 核心：視訊驅動程式中的爭用情形造成釋放後使用，進而導致本機權限提升 (CVE-2019-9458)

  - 核心：char_dev.c 的 cdev_get 中存在爭用情形，因而可能發生釋放後使用問題 (CVE-2020-0305)

  - 核心：使用者空間 coredump 中的未初始化核心資料洩漏 (CVE-2020-10732)

  - 核心：繞過 SELinux netlink 權限檢查 (CVE-2020-10751)

  - 核心：s390/s390x 上存在核心堆疊資訊洩漏問題 (CVE-2020-10773)

  - 核心：讀取 /proc/sys/kernel/rh_features 檔案時，可能發生記憶體洩漏 (CVE-2020-10774)

  - 核心：vhost_net：在檢查 sk_family 欄位時，get_raw_socket 中發生堆疊溢位 (CVE-2020-10942)

  - 核心：mm/mempolicy.c 的 mpol_parse_str 函式中有超出邊界寫入問題 (CVE-2020-11565)

  - 核心：不當處理 drivers/media/usb/gspca/xirlink_cit.c 中的無效描述符號 (CVE-2020-11668)

  - 核心：drivers/net/wireless/mediatek/mt76/dma.c 的 mt76_add_fragment 函式中存在緩衝區溢位問題 (CVE-2020-12465)

  - 核心：透過具有特製中繼資料的 XFS v5 影像造成過長持續時間同步 (CVE-2020-12655)

  - 核心：net/xdp/xdp_umem.c 中的 xdp_umem_reg 有一個超出邊界寫入問題，可導致當機和資料損毀 (CVE-2020-12659)

  - 核心：sg_write 函式在特定失敗案例中缺少 sg_remove_request 呼叫 (CVE-2020-12770)

  - 核心：可能會傳送任意訊號至有權限的 (suidroot) 父處理程序 (CVE-2020-12826)

  - 核心：在 get_futex_key() 中參照已移除 superblock 的 inode 導致 UAF (CVE-2020-14381)

  - 核心：iov_iter_copy_from_user_atomic() 中的軟鎖定可導致 DoS (CVE-2020-25641)

  - 核心：drivers/tty/vt/vt.c 的 vc_do_resize 函式中有超出邊界讀取問題 (CVE-2020-8647)

  - 核心：drivers/tty/n_tty.c 的 n_tty_receive_buf_common 函式中存在釋放後使用問題 (CVE-2020-8648)

  - 核心：drivers/video/console/vgacon.c 的 vgacon_invert_region 函式中有無效讀取位置 (CVE-2020-8649)

請注意，Nessus 並未測試此問題，而是僅依據應用程式自我報告的版本號碼。

遠端 Oracle Linux 8 主機中安裝的套件受到 ELSA-2020-4431 公告中提及的多個弱點影響。

  - Linux 核心 5.2.14 中的 drivers/scsi/qla2xxx/qla_os.c 不會檢查 alloc_workqueue 傳回值，進而導致 NULL 指標解除參照。(CVE-2019-16233)

  - 在 5.0.5 版之前的 Linux 核心中發現一個問題。當 drivers/bluetooth/hci_ldisc.c 中的 hci_uart_set_proto() 出現  hci_uart_register_dev() 失敗情形時，釋放後使用問題即會發生。(CVE-2019-15917)

  - 在 Linux 核心 3.13 至 5.4 版中，Linux 核心的 KVM Hypervisor 處理「KVM_GET_EMULATED_CPUID」ioctl(2) 要求以取得 KVM Hypervisor 模擬的 CPUID 功能時，發現一個超出邊界記憶體寫入問題。能夠存取「/dev/kvm」裝置的使用者或處理序可利用此缺陷損毀系統，進而導致拒絕服務。(CVE-2019-19332)

  - Linux 核心 5.2.14 中的 drivers/net/fjes/fjes_main.c 未檢查 alloc_workqueue 傳回值，進而導致 NULL 指標解除參照。(CVE-2019-16231)

  - 在 5.0.6 版之前的 Linux 核心中，fs/proc/proc_sysctl.c 的 drop_sysctl_table() 中有一個 NULL 指標解除參照問題，此問題與 put_links 相關，亦即 CID-23da9588037e。 (CVE-2019-20054)

  - 在 5.5.8 之前的 Linux 核心中，drivers/vhost/net.c 的 get_raw_socket 不會驗證sk_family 欄位，這會允許攻擊者透過特製的系統呼叫，觸發核心堆疊損毀。
    (CVE-2020-10942)

  - 在 Linux 核心 5.3.9 及之前版本中，drivers/media/usb/dvb-usb/af9005.c 的 af9005_identify_state() 函式存在一個記憶體洩漏弱點，攻擊者藉此可引致拒絕服務 (記憶體消耗)， 亦稱 CID-2289adbfa559。(CVE-2019-18809)

  - 在 5.3.11 及之前版本的 Linux 核心中，drivers/net/wireless/marvell/mwifiex/pcie.c 的 mwifiex_pcie_alloc_cmdrsp_buf() 函式存在記憶體洩漏，這會允許攻擊者透過觸發 mwifiex_map_pci_memory() 失敗情形引致拒絕服務 (記憶體消耗)，亦稱 CID-db8fd2cde932。(CVE-2019-19056)

  - 在 Linux 核心 5.5.2 之前的版本中，drivers/tty/n_tty.c 的 n_tty_receive_buf_common 函式中存在釋放後使用弱點。(CVE-2020-8648)

  - 在 Linux 核心 5.5.2 及之前的版本中，drivers/tty/vt/vt.c 的 vc_do_resize 函式中存在釋放後使用弱點。(CVE-2020-8647)

  - 在 Linux 核心 5.5.2 及之前的版本中，drivers/video/console/vgacon.c 的 vgacon_invert_region 函式中存在釋放後使用弱點。(CVE-2020-8649)

  - Linux 核心 5.6.1 之前版本中的 drivers/media/usb/gspca/xirlink_cit.c (即 Xirlink 相機 USB 驅動程式) 未正確處理無效的描述符號，即 CID-a246b4d54770。(CVE-2020-11668)

  - Linux 核心 5.3.12 及之前版本中存在釋放後使用錯誤，可由惡意 USB 裝置透過 drivers/input/ff-memless.c 驅動程式觸發，即 CID-fa3a5a1880c9。(CVE-2019-19524)

  - Linux 核心 5.2.10 之前的版本中存在爭用情形錯誤，這是 USB 字元裝置驅動程式層中的惡意 USB 裝置所致，即 CID-303911cfc5b9。這會影響 drivers/usb/core/file.c。(CVE-2019-19537)

  - Linux 核心 5.4.12 之前版本的 drivers/input/input.c 中存在超出邊界寫入問題，這是特別建構的金鑰碼表格所致，input_set_keycode 即為一例，亦即 CID-cb222aed03d7。(CVE-2019-20636)

  - 5.4.2 之前的 Linux 核心會不當處理 ext4_expand_extra_isize，此問題與 fs/ext4/inode.c 和 fs/ext4/super.c 有關，亦稱 CID-4ea99936a163；__ ext4_expand_extra_isize 和 ext4_xattr_set_entry 中的釋放後使用錯誤即為一例。(CVE-2019-19767)

  - 在 5.5.10 之前的 Linux 核心的 drivers/net/wireless/mediatek/mt76/dma.c 的  mt76_add_fragment 中發現一個陣列溢位，亦稱 CID-b102f0c522cf。rx 片段過多的過大封包可損毀相鄰頁面的記憶體。(CVE-2020-12465)

  - 在 Linux 核心 5.6.7 之前的版本中發現一個問題。net/xdp/xdp_umem.c 的 xdp_umem_reg 中存在超出邊界寫入問題 (由具有 CAP_NET_ADMIN 功能的使用者執行)，這是缺少空餘空間驗證所致。
    (CVE-2020-12659)

  - 在 5.3.4 之前版本的 Linux 核心中，drivers/media/usb/ttusb-dec/ttusb_dec.c 驅動程式中存在一個可能由惡意 USB 裝置造成的資訊洩漏錯誤，即 CID-a10feaf8c464。(CVE-2019-19533)

  在 Linux 核心 5.6.10 及之前版本中，xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c 中發現一個問題。
    攻擊者可以透過具有特製中繼資料的 XFS v5 影像觸發過長持續時間同步，即 CID-d0c7feaf8767。(CVE-2020-12655)

  - 在 Linux 核心 5.6.11 及之前的版本中發現一個問題，在特定的失敗案例中，sg_write 缺少 sg_remove_request 呼叫，即 CID-83c6f2390040。(CVE-2020-12770)

  在 Linux 核心 5.3.11 之前版本的 crypto/crypto_user_base.c 中，crypto_report() 函式內的記憶體洩漏可讓攻擊者透過觸發 crypto_report_alg() 失敗 (亦即 CID-ffdde5932042)，造成拒絕服務 (記憶體損毀)。(CVE-2019-19062)

  - 在 Linux 核心的使用者空間核心傾印實作中發現一個瑕疵。此瑕疵可讓擁有本機帳戶的攻擊者損毀簡單的程式，並洩漏私人核心資料。
    (CVE-2020-10732)

  - 在 Linux 核心 5.0.21 中，掛載特別構建的 ext4 檔案系統映像、執行某些操作以及卸載，可導致 fs/ext4/super.c 的 ext4_put_super 中發生釋放後使用，這與 fs/ext4/super.c 中的 dump_orphan_list 有關。(CVE-2019-19447)

  - 在 5.7 版之前的 Linux 核心 SELinux LSM 勾點實作中發現一個瑕疵，其錯誤假設 skb 只包含一個 netlink 訊息。勾點會錯誤地只驗證 skb 中的第一個 netlink 訊息，並以授予的權限允許或拒絕 skb 內的其餘訊息，而不進行進一步處理。(CVE-2020-10751)

  - 在 Linux 核心 5.3.11 及之前版本中，drivers/net/wireless/realtek/rtlwifi/usb.c 中的 rtl_usb_probe() 函式存在兩個記憶體洩漏弱點，攻擊者藉此可引致拒絕服務 (記憶體消耗)， 亦稱 CID-3f9361695113。(CVE-2019-19063)

  - 在 Linux 核心 5.3.9 及之前版本中，drivers/crypto/ccp/ccp-ops.c 中的 ccp_run_sha_cmd() 函式有一個記憶體洩漏弱點，攻擊者藉此可導致拒絕服務 (記憶體消耗)， 亦即 CID-128c66429247。
    (CVE-2019-18808)

  - **有爭議** 在 Linux 核心 5.3.11 及之前的版本中，drivers/char/ipmi/ipmi_msghandler.c 的 __ipmi_bmc_register() 函式中存在記憶體洩漏問題，攻擊者可藉此透過觸發 ida_simple_get 失敗造成拒絕服務 (記憶體消耗)，即 CID-4aa7afb0ee20。注意：第三方對此問題的相關性提出了爭議，因為攻擊者無法在探查時實際控制此失敗。(CVE-2019-19046)

  - Android 核心的視訊驅動程式中存在釋放後使用問題，這是爭用情形所致。這可能會導致本機權限提升，且不需額外的執行權限。不需使用者互動即可惡意利用。(CVE-2019-9458)

  - 在 Linux 核心 5.1.6 及其之前的所有版本中，在 arch/powerpc/platforms/pseries/dlpar.c 的 dlpar_parse_cc_property 中發現一個問題。prop->name 中存在未經檢查的 kstrdup，攻擊者或可藉此造成拒絕服務 (NULL 指標解除參照和系統當機)。(CVE-2019-12614)

  - **有爭議** 在 Linux 核心 5.6.2 及之前版本中發現一個問題。 mm/mempolicy.c 的 mpol_parse_str 中存在堆疊型超出邊界寫入問題，這是在剖析掛載選項時未正確處理空 nodelist 所致，即 CID-aa9f7d5172fa。注意：資安社群中有人不同意這是一個弱點，因為此問題是剖析掛載選項中的一個錯誤，而該選項只能由有權限的使用者指定，因此觸發該錯誤不會授予有心人士任何其尚未擁有的權限。(CVE-2020-11565)

  - 在 Linux 核心 5.6.5 之前版本中，發現訊號存取控制問題 (亦即 CID-7395ea4e65c2)。
    由於 include/linux/sched.h 中的 exec_id 只有 32 位元，因此整數溢位可干擾 do_notify_parent 保護機制。子處理程序可將任意訊號傳送至不同安全性網域中的父處理程序。惡意利用限制包括整數溢位發生前經過的時間量，以及沒有向父處理程序發出的訊號提示重大作業威脅的情況。(CVE-2020-12826)

  - 在 Linux 核心 5.9-rc7 之前版本的 GRO 實作中發現一個瑕疵。區塊子系統發出的零長度 biovec 要求可造成核心進入無限迴圈，進而造成拒絕服務。此瑕疵允許具有基本權限的本機攻擊者向區塊裝置發出要求，進而導致拒絕服務。此弱點對系統可用性威脅最大。(CVE-2020-25641)

  - 在 auditfilter.c 的 audit_free_lsm_field 中，可能存在錯誤的 kfree，這是因為 audit_data_to_entry 中的邏輯錯誤所致。這可能會導致本機權限提升，且不需額外的執行權限。不需使用者互動即可惡意利用。產品：Android 版本：Android 核心 Android ID：A-150693166References：上游核心 (CVE-2020-0444)

  在 Linux 核心的 futex 實作中發現一個缺陷。本機攻擊者可利用此缺陷，在即將卸載的檔案系統上建立 futex 時，損毀系統記憶體或提升其權限。此弱點對於機密性、完整性以及系統可用性的威脅最大。(CVE-2020-14381)

  - Android 核心的視訊驅動程式中存在核心指標洩漏弱點，這是由 WARN_ON 陳述式所導致。這可能導致需要系統執行權限的本機資訊洩漏。不需使用者互動即可惡意利用。(CVE-2019-9455)

  - 在 5.3.11 及之前版本的 Linux 核心中，drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c 的 rtl8xxxu_submit_int_urb() 函式存在記憶體流失問題，攻擊者可藉由觸發 usb_submit_urb() 失敗來造成程式拒絕服務 (記憶體消耗)， 即 CID-a2cdd07488e6。(CVE-2019-19068)

  - 在 5.3.11 及之前版本的 Linux 核心中，kernel/trace/trace_events_filter.c 的 predicate_parse() 函式存在記憶體流失問題，攻擊者可藉此造成程式拒絕服務 (記憶體消耗)，即 CID-96c5c6e6a5b6。
    (CVE-2019-19072)

  - 在 4.18.0-193.el8 之前版本的 Linux 核心中，讀取 /proc/sys/kernel/rh_features 檔案時，sysctl 子系統中會發生記憶體流失問題。此瑕疵允許本機使用者從核心記憶體讀取未初始化的值。此弱點對機密性的威脅最大。(CVE-2020-10774)

  - 在 5.2.3 版之前的 Linux 核心中發現一個問題。檔案 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c 的 hclge_tm_schd_mode_vnet_base_cfg 函式中存在超出邊界存取問題。
    (CVE-2019-15925)

  - 在 Linux 核心 5.2 中，setxattr 作業會在掛載特別建構的 ext4 影像後，造成超出邊界寫入存取，這是因為在 memset 呼叫中使用大型 old_size 值時，fs/ext4/xattr.c 中的 ext4_xattr_set_entry 會發生釋放後使用，即 CID-345c0dbf3a30。(CVE-2019-19319)

  - 在 Linux 核心 5.1.6 之前的版本中，drivers/media/rc/serial_ir.c 的 serial_ir_init_module() 中存在釋放後使用問題。(CVE-2019-19543)

  - 在 5.4.2 之前的 Linux 核心中，當使用 GCC 9 時，由於  fpu_fpregs_owner_ctx 快取處理錯誤，arch/x86/include/asm/fpu/internal.h 的 fpregs_state_valid 允許依賴內容的攻擊者造成拒絕服務 (記憶體損毀)，亦可能造成其他不明影響，amd64 上的 Go 1.14 發行前版本會錯誤處理訊號型非合作預先佔位即為一例，即 CID-59c4bd853abc。
    (CVE-2019-19602)

  - ** 有爭議 ** 在 Linux 核心 4.19.83 中，fs/debugfs/inode.c 的 debugfs_remove 函式中存在釋放後使用 (讀取) 問題，該函式用於移除之前透過其他 debugfs 函式 (如 debugfs_create_file) 呼叫建立的檔案或目錄。注意：Linux 核心開發人員認為此問題與 debugfs 無關，而是 blktrace 中誤用 debugfs 所致。(CVE-2019-19770)

  - char_dev.c 的 cdev_get 中存在爭用情形，因而可能發生釋放後使用問題。這可能會導致本機權限提升，並需要系統執行權限。 不需使用者互動即可惡意利用。產品：AndroidVersions：Android-10Android ID：A-153467744 (CVE-2020-0305)

  - 在 Linux 核心的記憶體管理員功能中發現 s390/s390x 存在堆疊資訊洩漏問題，它會錯誤寫入 /proc/sys/vm/cmm_timeout 檔案。本機使用者可藉此問題來檢視核心資料。(CVE-2020-10773)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
133913	EulerOS 2.0 SP5 : kernel (EulerOS-SA-2020-1112)	Nessus	Huawei Local Security Checks	2020/2/24	2024/3/26	critical
140381	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2497-1)	Nessus	SuSE Local Security Checks	2020/9/8	2024/2/21	critical
137516	EulerOS 2.0 SP2 : kernel (EulerOS-SA-2020-1674)	Nessus	Huawei Local Security Checks	2020/6/17	2023/4/25	critical
141619	CentOS 7 : kernel (RHSA-2020:4060)	Nessus	CentOS Local Security Checks	2020/10/20	2024/10/9	high
142382	RHEL 8 : kernel-rt (RHSA-2020:4609)	Nessus	Red Hat Local Security Checks	2020/11/4	2024/11/7	high
143086	RHEL 7 : kernel-alt (RHSA-2020:2854)	Nessus	Red Hat Local Security Checks	2020/11/19	2024/11/7	high
153172	Oracle Linux 6/7：Unbreakable Enterprise 核心 (ELSA-2021-9442)	Nessus	Oracle Linux Local Security Checks	2021/9/9	2024/10/22	critical
153221	OracleVM 3.4：kernel-uek (OVMSA-2021-0030)	Nessus	OracleVM Local Security Checks	2021/9/13	2023/12/1	critical
141026	RHEL 7：kernel-rt (RHSA-2020: 4062)	Nessus	Red Hat Local Security Checks	2020/9/29	2024/11/7	high
141057	RHEL 7：核心 (RHSA-2020: 4060)	Nessus	Red Hat Local Security Checks	2020/9/30	2024/11/7	high
145806	CentOS 8：核心 (CESA-2020: 4431)	Nessus	CentOS Local Security Checks	2021/2/1	2024/1/25	high
180891	Oracle Linux 8：核心 (ELSA-2020-4431)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/11/1	high

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