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SUSE giflib Important Heap Buffer Overflow Fix 2026-2667-1

suse
Calendar Grey June 26, 2026
Dist Suse Esm H88
An important update addresses a heap out-of-bounds issue in giflib for SUSE, enhancing system security and stability.
An update that solves one vulnerability can now be installed.

Summary

## 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

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important giflib CVE-2026-26740

References

* bsc#1259836

Cross-

* 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.

##

* https://www.suse.com/security/cve/CVE-2026-26740.html

* https://bugzilla.suse.com/show_bug.cgi?id=1259836

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important giflib CVE-2026-26740

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