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AlmaLinux 9.6 [TuxCare] Security Update: gawk / gawk-all-langpacks / gawk-devel / gawk-doc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1784217178)

medium Nessus Plugin ID 359607

Synopsis

The AlmaLinux host is missing one or more security updates.

Description

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1784217178 advisory.

 - Use After Free vulnerability has been found in io.c program file of gawk (do_getline_redir() routine).
 This issue may lead to a crash. It affects gawk in versions 5.4.0 and below. (CVE-2026-40467)

 - Integer overflow vulnerability has been found in builtin.c program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below. (CVE-2026-40469)

 - Buffer overflow vulnerability has been found in extension/readdir.c program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. It affects gawk in versions 5.4.0 and below.
 (CVE-2026-40553)

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

Solution

Update the affected packages based on the guidance in TuxCare advisory ALMALINUX9.6:CLSA-2026:1784217178.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1784217178

http://www.nessus.org/u?233656b5

Plugin Details

Severity: Medium

ID: 359607

File Name: tuxcare_alma_linux_9.6_CLSA-2026-1784217178.nasl

Version: 1.1

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.45

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-40469

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.1

Threat Score: 1.2

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L

CVSS Score Source: CVE-2026-40553

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 7/16/2026

Vulnerability Publication Date: 7/13/2026

Reference Information

CVE: CVE-2026-40467, CVE-2026-40469, CVE-2026-40553

CLSA: 2026:1784217178