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

A flaw was found in giflib. A remote attacker can exploit a buffer overflow vulnerability in the EGifGCBToExtension function by providing a specially crafted Graphics Control Extension GCE block. This allows overwriting an existing GCE block without proper size validation, leading to a denial of...

Important: Red Hat Security Advisory: giflib security update

An update for giflib is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

Important: Red Hat Security Advisory: giflib security update

An update for giflib is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

ALSA-2026:33501 Important: giflib security update

giflib is a library for reading and writing gif images. Security Fixes: giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension CVE-2026-26740 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer ...

ALSA-2026:33502 Important: giflib security update

giflib is a library for reading and writing gif images. Security Fixes: giflib: giflib: Denial of Service via buffer overflow in EGifGCBToExtension CVE-2026-26740 For more details about the security issues, including the impact, a CVSS score, acknowledgments, and other related information, refer ...

ROS-20260629-73-0024

The vulnerability in giflib is related to a memory reclamation error. Exploiting this vulnerability can allow an attacker to cause a service failure...

OPENSUSE-SU-2026:21076-1 Security update for giflib

This update for giflib fixes the following issue - CVE-2026-26740: heap out-of-bounds read when processing a specially crafted GIF file containing a GCE block with a truncated extension byte count bsc1259836...

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

This update for giflib fixes the following issue - CVE-2026-26740: heap out-of-bounds read when processing a specially crafted GIF file containing a GCE block with a truncated extension byte count bsc1259836...

SUSE-SU-2026:2667-1 Security update for giflib

This update for giflib fixes the following issue - CVE-2026-26740: heap out-of-bounds read when processing a specially crafted GIF file containing a GCE block with a truncated extension byte count bsc1259836...

[SECURITY] [DLA 4650-1] giflib security update

Debian LTS Advisory DLA-4650-1 [email protected] https://www.debian.org/lts/security/ Tobias Frost June 26, 2026 https://wiki.debian.org/LTS Package : giflib Version : 5.1.9-2+deb11u1 $bookwormVERSION CVE ID : CVE-2026-23868 CVE-2026-26740 Debian Bug : 1130495 1131368 Two vulnerabilties...

Debian dla-4650 : giflib-tools - security update

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4650 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4650-1 [email protected]...

Oracle Linux 9 : giflib (ELSA-2026-19367)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-19367 advisory. 5.2.1-10.1 - rebuild 5.2.1-10 - fix CVE-2026-23868: double free in GifMakeSavedImage RHEL-154864 Tenable has extracted the preceding description block directly...

Astra Linux – Vulnerability in giflib

Giflib contains a double-free vulnerability, which is caused by a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions necessary to trigger this vulnerability are complex, but it may still occur...

OESA-2026-2708 giflib security update

giflib is a library of gif images and provides utilities for processing images. Security Fixes: 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 validati...

OESA-2026-2706 giflib security update

giflib is a library of gif images and provides utilities for processing images. Security Fixes: 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 validati...

Amazon Linux 2023 : giflib, giflib-devel, giflib-utils (ALAS2023-2026-1883)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1883 advisory. 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 validati...

ROOT-OS-DEBIAN-12-CVE-2023-48161 CVE-2023-48161 in rootio-giflib - Patched by Root

Root has patched CVE-2023-48161 in the rootio-giflib package for Root:Debian:12. Multiple fixed versions available...

ROOT-OS-DEBIAN-12-CVE-2025-31344 CVE-2025-31344 in rootio-giflib - Patched by Root

Root has patched CVE-2025-31344 in the rootio-giflib package for Root:Debian:12. Multiple fixed versions available...

ROOT-OS-DEBIAN-12-CVE-2021-40633 CVE-2021-40633 in rootio-giflib - Patched by Root

Root has patched CVE-2021-40633 in the rootio-giflib package for Root:Debian:12. Multiple fixed versions available...

ROOT-OS-DEBIAN-12-CVE-2020-23922 CVE-2020-23922 in rootio-giflib - Patched by Root

Root has patched CVE-2020-23922 in the rootio-giflib package for Root:Debian:12. Multiple fixed versions available...