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

[SLE-SECURITY-UPDATES]

# Security update for giflib

Announcement ID: SUSE-SU-2026:2667-1  
Release Date: 2026-06-26T14:08:44Z  
Rating: important  
References:

  * bsc#1259836

  
Cross-References:

  * CVE-2026-26740

  
CVSS scores:

  * CVE-2026-26740 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-26740 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-26740 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

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
    (bsc#1259836).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2667=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2667=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * giflib-devel-5.0.6-13.15.1
    * giflib-debugsource-5.0.6-13.15.1
    * libgif6-5.0.6-13.15.1
    * giflib-progs-5.0.6-13.15.1
    * libgif6-debuginfo-5.0.6-13.15.1
    * giflib-progs-debuginfo-5.0.6-13.15.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS (s390x x86_64)
    * libgif6-32bit-5.0.6-13.15.1
    * libgif6-debuginfo-32bit-5.0.6-13.15.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * giflib-devel-5.0.6-13.15.1
    * giflib-debugsource-5.0.6-13.15.1
    * libgif6-5.0.6-13.15.1
    * libgif6-debuginfo-32bit-5.0.6-13.15.1
    * libgif6-32bit-5.0.6-13.15.1
    * giflib-progs-5.0.6-13.15.1
    * libgif6-debuginfo-5.0.6-13.15.1
    * giflib-progs-debuginfo-5.0.6-13.15.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-26740.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1259836

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