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ALSA-2026:33501 — Important: giflib security update

Affected: AlmaLinux:9: giflib, AlmaLinux:9: giflib-devel

giflib is a library for reading and writing gif images.

Security Fix(es):

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

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2026-06618

BELL-CVE-2026-26740

Affected: Alpaquita:25: giflib, Alpaquita:stream: giflib

Withdrawn: CLEANSTART-2026-AM39668 — yawkat LZ4 Java provides LZ4 compression for Java

Withdrawn by the publisher.

Affected: CleanStart: apache-nifi

Multiple security vulnerabilities affect the apache-nifi package. yawkat LZ4 Java provides LZ4 compression for Java. See references for individual vulnerability details.

EUVD-2026-339782

fkie_cve-2026-26740

Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.

GHSA-g43h-fmhp-fvff

OESA-2026-2685 — giflib security update

Affected: openEuler:24.03-LTS-SP3: giflib

giflib is a library of gif images and provides utilities for processing images. Security Fix(es):

openSUSE-SU-2026:11117-1 — giflib-devel-32bit-5.2.2-4.1 on GA media

giflib-devel-32bit-5.2.2-4.1 on GA media

RHSA-2026:33447 — Red Hat Security Advisory: giflib security update

giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension

RLSA-2026:33501 — Important: giflib security update

Affected: Rocky Linux:9: giflib

giflib is a library for reading and writing gif images.

Security Fix(es):

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

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

SUSE-SU-2026:22382-1 — Security update for giflib

Security update for giflib

UBUNTU-CVE-2026-26740

Affected: Ubuntu:Pro:16.04:LTS: giflib, Ubuntu:Pro:18.04:LTS: giflib, Ubuntu:20.04:LTS: giflib, Ubuntu:22.04:LTS: giflib, Ubuntu:24.04:LTS: giflib, Ubuntu:25.10: giflib, Ubuntu:26.04:LTS: giflib

WID-SEC-W-2026-2137 — Red Hat Enterprise Linux (giflib): Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.