SUSE-SU-2026:2666-1: important: Security update for giflib

[SLE-UPDATES]

# Security update for giflib

Announcement ID: SUSE-SU-2026:2666-1  
Release Date: 2026-06-26T14:08:24Z  
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:

  * Basesystem Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
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 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2666=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2666=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2666=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2666=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2666=1

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-2666=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-2666=1

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2666=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2666=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-2666=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2666=1

## Package List:

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
    x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
    x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
    x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * libgif7-debuginfo-5.2.2-150000.4.22.1
    * giflib-debugsource-5.2.2-150000.4.22.1
    * libgif7-5.2.2-150000.4.22.1
    * giflib-devel-5.2.2-150000.4.22.1

## References:

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

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