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AlmaLinux 10 : giflib (ALSA-2026:33502)

high Nessus Plugin ID 324582

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:33502 advisory.

 * giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension (CVE-2026-26740)

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 giflib and / or giflib-devel packages.

See Also

https://access.redhat.com/errata/RHSA-2026:33502

https://errata.almalinux.org/10/ALSA-2026-33502.html

Plugin Details

Severity: High

ID: 324582

File Name: alma_linux_ALSA-2026-33502.nasl

Version: 1.1

Type: Local

Published: 7/1/2026

Updated: 7/1/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2026-26740

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:10::appstream, cpe:/o:alma:linux:10::sap_hana, cpe:/o:alma:linux:10, p-cpe:/a:alma:linux:giflib-devel, cpe:/o:alma:linux:10::nfv, cpe:/o:alma:linux:10::baseos, cpe:/o:alma:linux:10::supplementary, p-cpe:/a:alma:linux:giflib, cpe:/o:alma:linux:10::sap, cpe:/o:alma:linux:10::resilientstorage, cpe:/o:alma:linux:10::powertools, cpe:/o:alma:linux:10::highavailability, cpe:/o:alma:linux:10::realtime

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/30/2026

Vulnerability Publication Date: 3/18/2026

Reference Information

CVE: CVE-2026-26740

CWE: 787

RHSA: 2026:33502