The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3933-1 advisory.

    The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.


    The following security bugs were fixed:

    - Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have     happened in the past (jsc#SLE-22573)

      You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0.
    (kernel.unprivileged_bpf_disabled = 0)

    - CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use     after free. This could lead to local escalation of privilege with System execution privileges needed. User     interaction is not needed for exploitation (bnc#1192045).
    - CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-     ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker     with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system     crash or a leak of internal kernel information. The highest threat from this vulnerability is to system     availability (bnc#1192781).
    - CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks     about UDP ports in use. (bsc#1191790)
    - CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails  (bsc#1191961).
    - CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in     drivers/isdn/capi/kcapi.c (bnc#1191958).
    - CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking     for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).


Tenable has extracted the preceding description block directly from the SUSE 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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-414574 advisory.

    hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev     without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

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

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

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3929-1 advisory.

    The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes.

    The following security bugs were fixed:

    - Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have     happened in the past (jsc#SLE-22573)

      You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0.
    (kernel.unprivileged_bpf_disabled = 0)

    - CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may     have allowed unauthorized disclosure of information to an attacker with local user access via a side-     channel analysis (bnc#1068032). Additional spectrev1 fixes were added to the eBPF code.
    - CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed local users to create files with an     unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by     a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose     group ownership is that group. The intended behavior was that the non-member can trigger creation of a     directory (but not a plain file) whose group ownership is that group. The non-member can escalate     privileges by making the plain file executable and SGID (bnc#1087082 bnc#1100416 bnc#1129735).
    - CVE-2018-16882: A use-after-free issue was found in the way the KVM hypervisor processed posted     interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error     while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc'     descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this     flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel     versions and are vulnerable (bnc#1119934).
    - CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory     corruption due to a use after free. This could lead to local escalation of privilege with System execution     privileges needed. User interaction is not needed for exploitation (bnc#1176724).
    - CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux     kernel Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka     CID-d0c7feaf8767 (bnc#1171217).
    - CVE-2020-14305: 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 allowed 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 (bnc#1173346).
    - CVE-2020-3702: Specifically timed and handcrafted traffic can cause internal errors in a WLAN device     that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure     over the air for a discrete set of traffic (bnc#1191193).
    - CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg     function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to     crash the system by exhausting available memory. The highest threat from this vulnerability is to system     availability (bnc#1183089).
    - CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-     ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker     with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system     crash or a leak of internal kernel information. The highest threat from this vulnerability is to system     availability (bnc#1192781).
    - CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c     because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd.
    This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).
    - CVE-2021-34556: In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive     information from kernel memory via a Speculative Store Bypass side-channel attack because the protection     mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).
    - CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails  (bsc#1191961).
    - CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
    - CVE-2021-35477: In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive     information from kernel memory via a Speculative Store Bypass side-channel attack because a certain     preempting store operation did not necessarily occur before a store operation that has an attacker-     controlled value (bnc#1188985).
    - CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth     stack (bsc#1188172).
    - CVE-2021-3653: A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw     occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a     nested guest (L2). Due to improper validation of the 'int_ctl' field, this issue could allow a malicious     L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2     guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire     system, leak of sensitive data or potential guest-to-host escape. (bnc#1189399).
    - CVE-2021-3655: A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing     size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory     (bnc#1188563).
    - CVE-2021-3659: Fixed a NULL pointer dereference in llsec_key_alloc() in net/mac802154/llsec.c     (bsc#1188876).
    - CVE-2021-3679: A lack of CPU resource in the tracing module functionality was found in the way user uses     trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use     this flaw to starve the resources causing denial of service (bnc#1189057).
    - CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev     without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free     (bnc#1188601).
    - CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
    - CVE-2021-3732: Mounting overlayfs inside an unprivileged user namespace can reveal files (bsc#1189706).
    - CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module.
    (bsc#1190023)
    - CVE-2021-3753: Fixed race out-of-bounds in virtual terminal handling (bsc#1190025).
    - CVE-2021-37576: arch/powerpc/kvm/book3s_rtas.c on the powerpc platform allowed KVM guest OS users to     cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e (bnc#1188838 bnc#1190276).
    - CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
    - CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
    - CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a     buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
    - CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computed the access permissions of a shadow     page, leading to a missing guest protection page fault (bnc#1189262).
    - CVE-2021-38204: drivers/usb/host/max3421-hcd.c allowed physically proximate attackers to cause a denial     of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations     (bnc#1189291).
    - CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c     (bsc#1191958).
    - CVE-2021-40490: A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the     ext4 subsystem in the Linux kernel (bnc#1190159)
    - CVE-2021-42008: The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel has a slab     out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access     (bnc#1191315).
    - CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to     drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt     mishandled bounds checking (bnc#1184673).
    - CVE-2021-43389: An issue was discovered in the Linux kernel There was an array-index-out-of-bounds flaw     in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
    - - ipv4: make exception cache less predictible (bsc#1191790,  CVE-2021-20322).


Tenable has extracted the preceding description block directly from the SUSE 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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-1988 advisory.

    - netfilter: nf_tables_offload: incorrect flow offload action array size (Florian Westphal) [2056728]     {CVE-2022-25636}
    - RDMA/cma: Do not change route.addr.src_addr.ss_family (Kamal Heib) [2032074] {CVE-2021-4028}
    - x86/speculation: Check CPU capability before applying IBRS spectre v2 mitigation (Waiman Long) [2062156     2062166] {CVE-2022-0001 CVE-2022-0002 CVE-2021-26401}
    - x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT (Waiman Long) [2062156 2062166]     {CVE-2022-0001 CVE-2022-0002 CVE-2021-26401}
    - x86/speculation: Warn about Spectre v2 LFENCE mitigation (Waiman Long) [2062156 2062166] {CVE-2022-0001     CVE-2022-0002 CVE-2021-26401}
    - x86/speculation: Update link to AMD speculation whitepaper (Waiman Long) [2062166] {CVE-2021-26401}
    - x86/speculation: Use generic retpoline by default on AMD (Waiman Long) [2062166] {CVE-2021-26401}
    - x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting (Waiman Long)     [2062156] {CVE-2022-0001 CVE-2022-0002}
    - Documentation/hw-vuln: Update spectre doc (Waiman Long) [2062156] {CVE-2022-0001 CVE-2022-0002}
    - x86/speculation: Add eIBRS + Retpoline options (Waiman Long) [2062156] {CVE-2022-0001 CVE-2022-0002}
    - x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE (Waiman Long) [2062156] {CVE-2022-0001     CVE-2022-0002}
    - x86,bugs: Unconditionally allow spectre_v2=retpoline,amd (Waiman Long) [2062156] {CVE-2022-0001     CVE-2022-0002}
    - x86: deduplicate the spectre_v2_user documentation (Waiman Long) [2062156] {CVE-2022-0001 CVE-2022-0002}
    - fuse: fix pipe buffer lifetime for direct_io (Miklos Szeredi) [2064863] {CVE-2022-1011}
    - tipc: improve size validations for received domain records (Xin Long) [2048971] {CVE-2022-0435}

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 kernel installed on the remote host is prior to 4.14.252-195.481. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1719 advisory.

    A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the     timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user     privileges to cause a denial of service, slowing and eventually stopping the system while running OSP. The     highest threat from this vulnerability is system availability. (CVE-2021-20317)

    A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users     do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
    (CVE-2021-20321)

    A flaw use-after-free in the Linux kernel USB High Speed Mobile Devices functionality was found in the way     user detaches USB device. A local user could use this flaw to crash the system or escalate their     privileges on the system. (CVE-2021-37159)

    A flaw was found in the Linux kernel. A memory leak in the ccp-ops crypto driver can allow attackers to     cause a denial of service. This vulnerability is similar with the older CVE-2019-18808. The highest threat     from this vulnerability is to system availability. (CVE-2021-3744)

    A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker     to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. The highest threat     from this vulnerability is to system availability. (CVE-2021-3764)

    A flaw was found in the Linux kernel. The cBPF JIT compiler may produce machine code with incorrect     branches. This flaw allows an unprivileged user to craft anomalous machine code, where the control flow is     hijacked to execute arbitrary kernel code. The highest threat from this vulnerability is to     confidentiality, integrity, as well as system availability. (CVE-2021-38300)

    An out-of-bounds (OOB) memory write flaw was found in prealloc_elems_and_freelist in kernel/bpf/stackmap.c     in the bpf in the Linux kernel. In this flaw, the multiplication to calculate the size could lead to an     integer overflow which could allow a local attacker, with a special user privilege, to gain access to out-     of-bounds memory leading to a system crash or a leak of internal kernel information. (CVE-2021-41864)

    In the Linux kernel, the following vulnerability has been resolved:

    irqchip/gic-v3-its: Fix potential VPE leak on error (CVE-2021-47373)

    In the Linux kernel, the following vulnerability has been resolved:

    blktrace: Fix uaf in blk_trace access after removing by sysfs (CVE-2021-47375)

    In the Linux kernel, the following vulnerability has been resolved:

    tty: Fix out-of-bound vmalloc access in imageblit (CVE-2021-47383)

    In the Linux kernel, the following vulnerability has been resolved:

    cpufreq: schedutil: Use kobject release() method to free sugov_tunables (CVE-2021-47387)

    In the Linux kernel, the following vulnerability has been resolved:

    sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb (CVE-2021-47397)

    In the Linux kernel, the following vulnerability has been resolved:

    HID: betop: fix slab-out-of-bounds Write in betop_probe (CVE-2021-47404)

    In the Linux kernel, the following vulnerability has been resolved:

    HID: usbhid: free raw_report buffers in usbhid_stop (CVE-2021-47405)

    In the Linux kernel, the following vulnerability has been resolved:

    phy: mdio: fix memory leak (CVE-2021-47416)

    In the Linux kernel, the following vulnerability has been resolved:

    net_sched: fix NULL deref in fifo_set_limit() (CVE-2021-47418)

    In the Linux kernel, the following vulnerability has been resolved:

    i2c: acpi: fix resource leak in reconfiguration device addition (CVE-2021-47425)

    In the Linux kernel, the following vulnerability has been resolved:

    xhci: Fix command ring pointer corruption while aborting a command (CVE-2021-47434)

    In the Linux kernel, the following vulnerability has been resolved:

    nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells (CVE-2021-47497)

Tenable has extracted the preceding description block directly from the tested product 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 microvm-kernel installed on the remote host is prior to 4.14.252-207.481. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2MICROVM-KERNEL-4.14-2023-001 advisory.

    A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the     timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user     privileges to cause a denial of service, slowing and eventually stopping the system while running OSP. The     highest threat from this vulnerability is system availability. (CVE-2021-20317)

    A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users     do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.
    (CVE-2021-20321)

    A flaw use-after-free in the Linux kernel USB High Speed Mobile Devices functionality was found in the way     user detaches USB device. A local user could use this flaw to crash the system or escalate their     privileges on the system. (CVE-2021-37159)

    A flaw was found in the Linux kernel. A memory leak in the ccp-ops crypto driver can allow attackers to     cause a denial of service. This vulnerability is similar with the older CVE-2019-18808. The highest threat     from this vulnerability is to system availability. (CVE-2021-3744)

    A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker     to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. The highest threat     from this vulnerability is to system availability. (CVE-2021-3764)

    A flaw was found in the Linux kernel. The cBPF JIT compiler may produce machine code with incorrect     branches. This flaw allows an unprivileged user to craft anomalous machine code, where the control flow is     hijacked to execute arbitrary kernel code. The highest threat from this vulnerability is to     confidentiality, integrity, as well as system availability. (CVE-2021-38300)

    An out-of-bounds (OOB) memory write flaw was found in prealloc_elems_and_freelist in kernel/bpf/stackmap.c     in the bpf in the Linux kernel. In this flaw, the multiplication to calculate the size could lead to an     integer overflow which could allow a local attacker, with a special user privilege, to gain access to out-     of-bounds memory leading to a system crash or a leak of internal kernel information. (CVE-2021-41864)

Tenable has extracted the preceding description block directly from the tested product 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 Rocky Linux 8.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ ciqsa-2026_0009 advisory.

    This advisory aggregates security fixes for the kernel SRPM in CIQ LTS 8.6. It addresses 214 CVEs:
    CVE-2019-0154, CVE-2020-29661, CVE-2019-11091, CVE-2021-3609, CVE-2019-8912, and 209 more.

Tenable has extracted the preceding description block directly from the CIQ 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev     without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.
    (CVE-2021-37159)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
276196	TencentOS Server 3: kernel (TSSA-2024:1027)	Nessus	Tencent Local Security Checks	2025/11/20	2026/3/11	high
155912	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3933-1)	Nessus	SuSE Local Security Checks	2021/12/7	2026/6/25	high
266935	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-414574)	Nessus	Unity Linux Local Security Checks	2025/10/7	2025/10/15	medium
155910	SUSE SLES12: kernel-default / kernel-default-base / kernel-default-devel / etc (SUSE-SU-2021:3929-1)	Nessus	SuSE Local Security Checks	2021/12/7	2026/6/26	high
161305	Oracle Linux 8 : kernel (ELSA-2022-1988)	Nessus	Oracle Linux Local Security Checks	2022/5/18	2026/2/9	critical
154914	Amazon Linux 2 : kernel (ALAS-2021-1719)	Nessus	Amazon Linux Local Security Checks	2021/11/5	2026/2/24	high
181942	Amazon Linux 2 : microvm-kernel (ALASMICROVM-KERNEL-4.14-2023-001)	Nessus	Amazon Linux Local Security Checks	2023/9/27	2024/12/11	high
358696	Rocky Linux 8.6 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (ciqsa-2026_0009)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/23	high
239742	TencentOS Server 2: kernel (TSSA-2024:1030)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/23	high
246090	Linux Distros Unpatched Vulnerability : CVE-2021-37159	Nessus	Misc.	2025/8/8	2026/11/11	medium

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