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SUSE xorg-x11-server Important Buffer Overflow Vulnern 2026-2792-1

suse
Calendar Grey July 8, 2026
Dist Suse Esm H88
An important security update for xorg-x11-server addressing a buffer overflow vulnerability on SUSE systems.
An update that solves one vulnerability can now be installed.

Summary

## This update for xorg-x11-server fixes the following issue * CVE-2026-55999: missing bounds check in `glamor_font_get` can lead to a heap buffer overflow when a font loaded from a malicious PCF file is processed (bsc#1268893). ## 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 Extended Security zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2792=1 * SUSE Linux Enterprise Server 12 SP5 LTSS zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2792=1 ## Package List: * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64) * xorg-x11-server-extra-1.19.6-10.105.1

Topics%20covered

Topics Covered

security advisory update buffer overflow SuSE important Xorg X11 Server

References

* bsc#1268893

Cross-

* CVE-2026-55999

CVSS scores:

* CVE-2026-55999 ( SUSE ): 7.3

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-55999 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-55999 ( NVD ): 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/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-2026-55999.html

* https://bugzilla.suse.com/show_bug.cgi?id=1268893

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2792-1
Release Date: 2026-07-08T07:55:40Z
Rating: important

Topics%20covered

Topics Covered

security advisory update buffer overflow SuSE important Xorg X11 Server

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