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SUSE libxml2 Important Buffer Overflow Fix Advisory SUSE-SU-2026-3111-1

suse
Calendar Grey July 17, 2026
Scroller Suse
A security update for SUSE libxml2 resolves a critical buffer overflow risk. Upgrade to protect your system.
SUSE released a security update for libxml2 addressing a vulnerability (CVE-2026-11979) involving stack-based buffer overflows in the xmlcatalog utility, affecting multiple SUSE Li...

Summary

## This update for libxml2 fixes the following issue * CVE-2026-11979: stack-based buffer overflows in the `xmlcatalog` utility when running in `--shell` mode (bsc#1269790). ## 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-2026-3111=1 * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-3111=1 ## Package List: * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64) * libxml2-tools-2.9.4-46.102.2 * python-libxml2-debuginfo-2.9.4-46.102.2

Topics%20covered

Topics Covered

security advisory security issue buffer overflow SuSE important libxml2

References

* bsc#1269790

Cross-

* CVE-2026-11979

CVSS scores:

* CVE-2026-11979 ( SUSE ): 7.1

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

* CVE-2026-11979 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

* CVE-2026-11979 ( NVD ): 1.8

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

* CVE-2026-11979 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3111-1
Release Date: 2026-07-17T14:18:02Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue buffer overflow SuSE important libxml2

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