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SUSE libXfont2 Important Buffer Overflow Vulnerabilities 2026-2794-1

suse
Calendar Grey July 8, 2026
Dist Suse Esm H88
A significant update for SUSE's libXfont2 addresses important vulnerabilities including buffer overflows. Upgrade recommended.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for libXfont2 fixes the following issues * CVE-2026-56001: integer overflow in `BitmapScaleBitmaps` can lead to a heap buffer overflow (bsc#1269018). * CVE-2026-56002: insufficient checks in `pcfReadFont` can lead to a heap buffer overflow (bsc#1269019). * CVE-2026-56003: missing bounds check in `ComputeScaledProperties` can lead to a heap buffer overflow (bsc#1269020). ## 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 SP6 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2794=1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE heap corruption important libXfont2

References

* bsc#1269018

* bsc#1269019

* bsc#1269020

Cross-

* CVE-2026-56001

* CVE-2026-56002

* CVE-2026-56003

CVSS scores:

* CVE-2026-56001 ( SUSE ): 7.0

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

* CVE-2026-56001 ( SUSE ): 7.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

* CVE-2026-56001 ( NVD ): 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

* CVE-2026-56002 ( SUSE ): 7.0

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

* CVE-2026-56002 ( SUSE ): 7.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

* CVE-2026-56002 ( NVD ): 8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

* CVE-2026-56003 ( SUSE ): 7.0

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2794-1
Release Date: 2026-07-08T08:08:25Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE heap corruption important libXfont2

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