Amazon Linux 2 : kernel (ALASKERNEL-5.15-2025-068)

high Nessus Plugin ID 232916

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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 5.15.57-29.131. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2025-068 advisory.

Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate is unused by its CNA. Notes: none. (CVE-2022-23816)

A flaw was found in hw. Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type, potentially leading to information disclosure. (CVE-2022-23825)

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access. (CVE-2022-26373)

A flaw was found in hw. The unprotected alternative channel of return branch target prediction in some Intel(R) Processors may allow an authorized user to enable information disclosure via local access.
(CVE-2022-28693)

A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-29900)

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-29901)

A memory access flaw was found in the Linux kernel's XEN hypervisor for the virtual machine. This flaw allows a local user to crash the system or potentially escalate their privileges on the system.
(CVE-2022-36123)

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

vt: fix memory overlapping when deleting chars in the buffer (CVE-2022-48627)

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

x86/speculation: Fill RSB on vmexit for IBRS (CVE-2022-49611)

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

nexthop: Fix data-races around nexthop_compat_mode. (CVE-2022-49629)

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

raw: Fix a data-race around sysctl_raw_l3mdev_accept. (CVE-2022-49631)

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

icmp: Fix data-races around sysctl_icmp_echo_enable_probe. (CVE-2022-49633)

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

icmp: Fix data-races around sysctl. (CVE-2022-49638)

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

sysctl: Fix data races in proc_douintvec_minmax(). (CVE-2022-49640)

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

cgroup: Use separate src/dst nodes when preloading css_sets for migration (CVE-2022-49647)

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: 232916

File Name: al2_ALASKERNEL-5_15-2025-068.nasl

Version: 1.2

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 3/19/2025

Updated: 3/27/2025

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: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2022-29900

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

CVSS Score Source: CVE-2022-36123

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-livepatch-5.15.57-29.131, 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 Available: true

Exploit Ease: No known exploits are available

Patch Publication Date: 3/13/2025

Vulnerability Publication Date: 8/15/2022

Reference Information

CVE: CVE-2022-23816, CVE-2022-23825, CVE-2022-26373, CVE-2022-28693, CVE-2022-29900, CVE-2022-29901, CVE-2022-36123, CVE-2022-48627, CVE-2022-49611, CVE-2022-49629, CVE-2022-49631, CVE-2022-49633, CVE-2022-49638, CVE-2022-49640, CVE-2022-49647

Detections

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