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openSUSE Leap 16.0 giflib Important Heap Overflow Fix 2026-21076-1

opensuse
Calendar Grey June 30, 2026
Dist Opensuse Esm H88
Critical update for giflib in openSUSE Leap 16.0 resolves important issues and enhances security.
An update that solves one vulnerability and has one bug fix 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 openSUSE security update use the suse recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-1098=1

Topics%20covered

Topics Covered

security advisory important heap overflow OpenSUSE giflib GCE block issue

Patch

Package List

- openSUSE Leap 16.0:

giflib-devel-5.2.2-160000.4.1

giflib-progs-5.2.2-160000.4.1

libgif7-5.2.2-160000.4.1

References

* bsc#1259836

References:

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:21076-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory important heap overflow OpenSUSE giflib GCE block issue

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