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SUSE LibXfont2 Important Buffer Overflow Issues 2026-2793-1

suse
Calendar Grey July 8, 2026
Dist Suse Esm H88
Security update for SUSE addressing important vulnerabilities in libXfont2, requiring prompt installations to mitigate risks.
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 12 SP5 LTSS zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-2793=1 ## Package List: * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x)

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libXfont2 heap

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-2026:2793-1
Release Date: 2026-07-08T08:06:28Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE important libXfont2 heap

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