Amazon Linux 2 : kernel (ALASKERNEL-5.4-2025-100)

high Nessus Plugin ID 234966

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of kernel installed on the remote host is prior to 5.4.292-208.414. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2025-100 advisory.

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

net/mlx5e: Fix use-after-free of encap entry in neigh update handler (CVE-2021-47247)

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

scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress (CVE-2023-52975)

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

mm: call the security_mmap_file() LSM hook in remap_file_pages() (CVE-2024-47745)

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

net: do not delay dst_entries_add() in dst_release() (CVE-2024-50036)

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

padata: avoid UAF for reorder_work (CVE-2025-21726)

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

ipv6: mcast: extend RCU protection in igmp6_send() (CVE-2025-21759)

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

nfsd: clear acl_access/acl_default after releasing them (CVE-2025-21796)

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

net_sched: Prevent creation of classes with TC_H_ROOT (CVE-2025-21971)

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

x86/microcode/AMD: Fix out-of-bounds on systems with CPU-less NUMA nodes (CVE-2025-21991)

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

HID: ignore non-functional sensor in HP 5MP Camera (CVE-2025-21992)

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

drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse() (CVE-2025-21996)

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

net: atm: fix use after free in lec_send() (CVE-2025-22004)

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

ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw(). (CVE-2025-22005)

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

netfilter: socket: Lookup orig tuple for IPv6 SNAT (CVE-2025-22021)

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

tracing: Fix use-after-free in print_graph_function_flags during tracer switching (CVE-2025-22035)

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

x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs (CVE-2025-22045)

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

netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets (CVE-2025-22063)

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

RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow (CVE-2025-22086)

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

thermal: int340x: Add NULL check for adev (CVE-2025-23136)

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

net_sched: skbprio: Remove overly strict queue assertions (CVE-2025-38637)

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.

Solution

Run 'yum update kernel' to update your system.

Plugin Details

Severity: High

ID: 234966

File Name: al2_ALASKERNEL-5_4-2025-100.nasl

Version: 1.4

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 4/29/2025

Updated: 6/20/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2025-21991

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:python-perf-debuginfo, p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-headers, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:bpftool-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:python-perf

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/23/2025

Vulnerability Publication Date: 5/21/2024

Reference Information

CVE: CVE-2021-47247, CVE-2023-52975, CVE-2024-47745, CVE-2024-50036, CVE-2025-21726, CVE-2025-21759, CVE-2025-21796, CVE-2025-21971, CVE-2025-21991, CVE-2025-21992, CVE-2025-21996, CVE-2025-22004, CVE-2025-22005, CVE-2025-22021, CVE-2025-22035, CVE-2025-22045, CVE-2025-22063, CVE-2025-22086, CVE-2025-23136, CVE-2025-38637

Detections

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