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 remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:2168 advisory.

  - A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API,     is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-     of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
    (CVE-2021-3501)

  - A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs     forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to     crash the system or escalate their privileges on the system. (CVE-2021-3543)

Note that Nessus has not tested for this issue 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-2021:2168 advisory.

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

    Security Fix(es):

    * kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32     GB from vcpu->run (CVE-2021-3501)

    * kernel: nitro_enclaves stale file descriptors on failed usercopy (CVE-2021-3543)

    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):

    * OVS mistakenly using local IP as tun_dst for VXLAN packets (?) (BZ#1944667)

    * Selinux: The task calling security_set_bools() deadlocks with itself when it later calls     selinux_audit_rule_match(). (BZ#1945123)

    * [mlx5] tc flower mpls match options does not work (BZ#1952061)

    * mlx5: missing patches for ct.rel (BZ#1952062)

    * CT HWOL: with OVN/OVS, intermittently, load balancer hairpin TCP packets get dropped for seconds in a     row (BZ#1952065)

    * [Lenovo 8.3 bug] Blackscreen after clicking on Settings icon from top-right corner. (BZ#1952900)

    * RHEL 8.x missing uio upstream fix. (BZ#1952952)

    * Turbostat doesn't show any measured data on AMD Milan (BZ#1952987)

    * P620 no sound from front headset jack (BZ#1954545)

    * RHEL kernel 8.2 and higher are affected by data corruption bug in raid1 arrays using bitmaps.
    (BZ#1955188)

    * [net/sched] connection failed with DNAT + SNAT by tc action ct (BZ#1956458)

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API,     is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-     of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
    (CVE-2021-3501)

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

The remote Ubuntu 21.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4977-1 advisory.

    Kiyin () discovered that the NFC LLCP protocol implementation in the Linux kernel contained a     reference counting error. A local attacker could use this to cause a denial of service (system crash).
    (CVE-2020-25670)

    Kiyin () discovered that the NFC LLCP protocol implementation in the Linux kernel did not properly     deallocate memory in certain error situations. A local attacker could use this to cause a denial of     service (memory exhaustion). (CVE-2020-25671, CVE-2020-25672)

    Kiyin () discovered that the NFC LLCP protocol implementation in the Linux kernel did not properly     handle error conditions in some situations, leading to an infinite loop. A local attacker could use this     to cause a denial of service. (CVE-2020-25673)

    Piotr Krysiuk and Benedict Schlueter discovered that the eBPF implementation in the Linux kernel performed     out of bounds speculation on pointer arithmetic. A local attacker could use this to expose sensitive     information. (CVE-2021-29155)

    Reiji Watanabe discovered that the KVM VMX implementation in the Linux kernel did not properly prevent     user space from tampering with an array index value, leading to a potential out-of-bounds write. A local     attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2021-3501)

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 Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2021:2165 advisory.

    This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify     the code of a running kernel.

    Security Fix(es):

    * kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32     GB from vcpu->run (CVE-2021-3501)

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:2168 advisory.

  - A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API,     is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-     of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
    (CVE-2021-3501)

  - A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs     forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to     crash the system or escalate their privileges on the system. (CVE-2021-3543)

Note that Nessus has not tested for this issue 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-2025-414589 advisory.

    A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API,     is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-     of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.

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 Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2021_2168 advisory.

    * kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32     GB from vcpu->run (CVE-2021-3501)

    * kernel: nitro_enclaves stale file descriptors on failed usercopy (CVE-2021-3543)

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 version of kernel installed on the remote host is prior to 5.10.35-31.135. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-001 advisory.

    2024-05-23: CVE-2021-46972 was added to this advisory.

    2024-05-23: CVE-2021-46974 was added to this advisory.

    2024-05-23: CVE-2021-46909 was added to this advisory.

    2024-04-25: CVE-2021-46922 was added to this advisory.

    2024-04-25: CVE-2021-46912 was added to this advisory.

    2024-04-25: CVE-2021-46908 was added to this advisory.

    2024-04-25: CVE-2021-46914 was added to this advisory.

    2024-04-25: CVE-2021-46971 was added to this advisory.

    2024-03-13: CVE-2021-46915 was added to this advisory.

    2024-03-13: CVE-2021-46904 was added to this advisory.

    2024-03-13: CVE-2021-46905 was added to this advisory.

    A use-after-free flaw was found in the Linux kernel's NFC LLCP protocol implementation in the way the user     performs manipulation with an unknown input for the llcp_sock_bind() function. This flaw allows a local     user to crash or escalate their privileges on the system. (CVE-2020-25670)

    A use-after-free flaw was found in the Linux kernel's NFC LLCP protocol implementation in the way the user     triggers the llcp_sock_connect() function. This flaw allows a local user to crash the system.
    (CVE-2020-25671)

    A memory leak in the Linux kernel's NFC LLCP protocol implementation was found in the way a user triggers     the llcp_sock_connect() function. This flaw allows a local user to starve the resources, causing a denial     of service. (CVE-2020-25672)

    A vulnerability was found in Linux kernel where non-blocking socket in llcp_sock_connect() leads to leak     and eventually hanging-up the system. (CVE-2020-25673)

    A use-after-free flaw was found in the Linux kernel's SCTP socket functionality that triggers a race     condition. This flaw allows a local user to escalate their privileges on the system. The highest threat     from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-23133)

    A vulnerability was discovered in retrieve_ptr_limit in kernel/bpf/verifier.c in the Linux kernel     mechanism to mitigate speculatively out-of-bounds loads (Spectre mitigation). In this flaw a local,     special user privileged (CAP_SYS_ADMIN) BPF program running on affected systems may bypass the protection,     and execute speculatively out-of-bounds loads from the kernel memory. This can be abused to extract     contents of kernel memory via side-channel. (CVE-2021-29155)

    A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is     only accessible to privileged users with CAP_SYS_ADMIN. This flaw allows a local user who can insert eBPF     instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all system memory. The     highest threat from this vulnerability is to confidentiality. (CVE-2021-31829)

    The eBPF RINGBUF bpf_ringbuf_reserve() function in the Linux kernel did not check that the allocated size     was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel     and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee (bpf, ringbuf: Deny     reserve of buffers larger than ringbuf) (v5.13-rc4) and backported to the stable kernels in v5.12.4,     v5.11.21, and v5.10.37. It was introduced via 457f44363a88 (bpf: Implement BPF ring buffer and verifier     support for it) (v5.8-rc1). (CVE-2021-3489)

    The eBPF ALU32 bounds tracking for bitwise ops (AND, OR and XOR) in the Linux kernel did not properly     update 32-bit bounds, which could be turned into out of bounds reads and writes in the Linux kernel and     therefore, arbitrary code execution. This issue was fixed via commit 049c4e13714e (bpf: Fix alu32 const     subreg bound tracking on bitwise operations) (v5.13-rc4) and backported to the stable kernels in v5.12.4,     v5.11.21, and v5.10.37. The AND/OR issues were introduced by commit 3f50f132d840 (bpf: Verifier, do     explicit ALU32 bounds tracking) (5.7-rc1) and the XOR variant was introduced by 2921c90d4718 (bpf:Fix a     verifier failure with xor) ( 5.10-rc1). (CVE-2021-3490)

    A flaw was found in the Linux kernel.  The io_uring PROVIDE_BUFFERS operation allowed the MAX_RW_COUNT     limit to be bypassed, which led to negative values being used in mem_rw when reading /proc/<PID>/mem. The     highest threat from this vulnerability is to data confidentiality and integrity as well as system     availability. (CVE-2021-3491)

    A flaw was found in the Linux kernel in versions before 5.12. The value of internal.ndata, in the KVM API,     is mapped to an array index, which can be updated by a user process at anytime which could lead to an out-     of-bounds write. The highest threat from this vulnerability is to data integrity and system availability.
    (CVE-2021-3501)

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

    net: hso: fix null-ptr-deref during tty device unregistration

    Multiple ttys try to claim the same the minor number causing a doubleunregistration of the same device.
    The first unregistration succeedsbut the next one results in a null-ptr-deref.

    The get_free_serial_index() function returns an available minor numberbut doesn't assign it immediately.
    The assignment is done by the callerlater. But before this assignment, calls to     get_free_serial_index()would return the same minor number.

    Fix this by modifying get_free_serial_index to assign the minor numberimmediately after one is found to be     and rename it to obtain_minor()to better reflect what it does. Similary, rename set_serial_by_index()to     release_minor() and modify it to free up the minor number of thegiven hso_serial. Every obtain_minor()     should have correspondingrelease_minor() call. (CVE-2021-46904)

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

    net: hso: fix NULL-deref on disconnect regression

    Commit 8a12f8836145 (net: hso: fix null-ptr-deref during tty deviceunregistration) fixed the racy minor     allocation reported by syzbot, butintroduced an unconditional NULL-pointer dereference on every     disconnectinstead.

    Specifically, the serial device table must no longer be accessed afterthe minor has been released by     hso_serial_tty_unregister(). (CVE-2021-46905)

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

    bpf: Use correct permission flag for mixed signed bounds arithmetic

    We forbid adding unknown scalars with mixed signed bounds due to thespectre v1 masking mitigation. Hence     this also needs bypass_spec_v1flag instead of allow_ptr_leaks. (CVE-2021-46908)

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

    ARM: footbridge: fix PCI interrupt mapping (CVE-2021-46909)

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

    net: Make tcp_allowed_congestion_control readonly in non-init netns (CVE-2021-46912)

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

    ixgbe: fix unbalanced device enable/disable in suspend/resume (CVE-2021-46914)

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

    netfilter: nft_limit: avoid possible divide error in nft_limit_init

    div_u64() divides u64 by u32.

    nft_limit_init() wants to divide u64 by u64, use the appropriatemath function (div64_u64)

    divide error: 0000 [#1] PREEMPT SMP KASANCPU: 1 PID: 8390 Comm: syz-executor188 Not tainted     5.12.0-rc4-syzkaller #0Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google     01/01/2011RIP: 0010:div_u64_rem include/linux/math64.h:28 [inline]RIP: 0010:div_u64     include/linux/math64.h:127 [inline]RIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85Code:
    ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45     89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00RSP:
    0018:ffffc90009447198 EFLAGS: 00010246RAX: 0000000000000000 RBX: 0000200000000000 RCX:
    0000000000000000RDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003RBP: ffff888020f80908     R08: 0000200000000000 R09: 0000000000000000R10: ffffffff875152d8 R11: 0000000000000000 R12:
    ffffc90009447270R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000FS:
    000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000CS:  0010 DS: 0000 ES: 0000 CR0:
    0000000080050033CR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0DR0: 0000000000000000     DR1: 0000000000000000 DR2: 0000000000000000DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
    0000000000000400Call Trace:nf_tables_newexpr net/netfilter/nf_tables_api.c:2675     [inline]nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713nft_set_elem_expr_alloc+0x27/0x280     net/netfilter/nf_tables_api.c:5160nf_tables_newset+0x1997/0x3150     net/netfilter/nf_tables_api.c:4321nfnetlink_rcv_batch+0x85a/0x21b0     net/netfilter/nfnetlink.c:456nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580     [inline]nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598netlink_unicast_kernel     net/netlink/af_netlink.c:1312 [inline]netlink_unicast+0x533/0x7d0     net/netlink/af_netlink.c:1338netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927sock_sendmsg_nosec     net/socket.c:654 [inline]sock_sendmsg+0xcf/0x120 net/socket.c:674____sys_sendmsg+0x6e8/0x810     net/socket.c:2350___sys_sendmsg+0xf3/0x170 net/socket.c:2404__sys_sendmsg+0xe5/0x1b0     net/socket.c:2433do_syscall_64+0x2d/0x70     arch/x86/entry/common.c:46entry_SYSCALL_64_after_hwframe+0x44/0xae (CVE-2021-46915)

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

    KEYS: trusted: Fix TPM reservation for seal/unseal (CVE-2021-46922)

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

    perf/core: Fix unconditional security_locked_down() call (CVE-2021-46971)

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

    ovl: fix leaked dentry (CVE-2021-46972)

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

    bpf: Fix masking negation logic upon negative dst register (CVE-2021-46974)

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.

ID	名稱	產品	系列	已發布	已更新	嚴重性
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
157742	Rocky Linux 8 : kernel (RLSA-2021:2168)	Nessus	Rocky Linux Local Security Checks	2022/2/9	2023/11/6	high
150295	RHEL 8 : kernel (RHSA-2021:2168)	Nessus	Red Hat Local Security Checks	2021/6/4	2024/11/7	high
248259	Linux Distros Unpatched Vulnerability : CVE-2021-3501	Nessus	Misc.	2025/8/11	2026/7/17	high
150151	Ubuntu 21.04 : Linux kernel vulnerabilities (USN-4977-1)	Nessus	Ubuntu Local Security Checks	2021/6/2	2024/8/27	high
150296	RHEL 8 : kpatch-patch (RHSA-2021:2165)	Nessus	Red Hat Local Security Checks	2021/6/4	2024/11/7	high
157610	AlmaLinux 8 : kernel (ALSA-2021:2168)	Nessus	Alma Linux Local Security Checks	2022/2/9	2022/5/6	high
267675	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-414589)	Nessus	Unity Linux Local Security Checks	2025/10/7	2025/10/15	high
357473	Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2021_2168)	Nessus	Rocky Linux Local Security Checks	2026/10/1	2026/10/1	high
160443	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-001)	Nessus	Amazon Linux Local Security Checks	2022/5/2	2026/2/26	high

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