Alerts This Week
Warning Icon 1 1,229
Alerts This Week
Warning Icon 1 1,229

SUSE giflib Important Heap Overflow Vulnerability CVE-2026-26740

suse
Calendar Grey June 26, 2026
Dist Suse Esm H88
SUSE Linux updates important GIF processing issue, fixing out-of-bounds access for enhanced security.
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 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

Topics%20covered

Topics Covered

security advisory SuSE important heap overflow 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:

* 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

Severity
important
Lowest
Low
Medium
High
Critical

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

Topics%20covered

Topics Covered

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

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here