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AlmaLinux 8 : ALSA-2026:A007kernel-rt (ALSA-2026:A007)

high Nessus Plugin ID 313283

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Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:A007 advisory.

 * kernel: xfrm: esp: avoid in-place decrypt on shared skb frags (CVE-2026-43284)

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

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

Solution

Update the affected packages.

See Also

https://errata.almalinux.org/8/ALSA-2026-A007.html

Plugin Details

Severity: High

ID: 313283

File Name: alma_linux_ALSA-2026-A007.nasl

Version: 1.4

Type: Local

Published: 5/8/2026

Updated: 5/27/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 10.0

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-43284

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::resilientstorage, p-cpe:/a:alma:linux:kernel-rt-modules, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:kernel-rt-devel, p-cpe:/a:alma:linux:kernel-rt-debug, p-cpe:/a:alma:linux:kernel-rt-debug-modules, p-cpe:/a:alma:linux:kernel-rt-modules-extra, cpe:/o:alma:linux:8::baseos, p-cpe:/a:alma:linux:kernel-rt-selftests-internal, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::sap, p-cpe:/a:alma:linux:kernel-rt-kvm, p-cpe:/a:alma:linux:kernel-rt-core, p-cpe:/a:alma:linux:kernel-rt-debug-devel, p-cpe:/a:alma:linux:kernel-rt-debug-modules-internal, p-cpe:/a:alma:linux:kernel-rt, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:kernel-rt-debug-core, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::powertools, p-cpe:/a:alma:linux:kernel-rt-modules-internal, p-cpe:/a:alma:linux:kernel-rt-debug-kvm, p-cpe:/a:alma:linux:kernel-rt-debug-modules-extra

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/8/2026

Vulnerability Publication Date: 5/8/2026

Exploitable With

Core Impact

Metasploit (xfrm-ESP Page-Cache Write via CVE-2026-43284)

Reference Information

CVE: CVE-2026-43284

CWE: 123