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SUSE Libxml2 Important Denial of Service Buffer Overflow Vuln 2026-22636-1

suse
Calendar Grey July 16, 2026
Scroller Suse
An important security update for SUSE fixes severe issues in libxml2, notably denial of service and buffer overflow bugs.
SUSE has released an important security update for libxml2 addressing two vulnerabilities that could lead to denial of service and buffer overflows, applicable to various SUSE Linu...

Summary

## This update for libxml2 fixes the following issues * CVE-2026-6732: crafted XSD-validated document can cause a denial of service (bsc#1262719). * 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 16.0 zypper in -t patch SUSE-SLES-16.0-1220=1 * SUSE Linux Enterprise Server for SAP applications 16.0 zypper in -t patch SUSE-SLES-16.0-1220=1 ## Package List: * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64) * python313-libxml2-2.13.8-160000.5.1 * libxml2-devel-2.13.8-160000.5.1

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow SuSE important libxml2

References

* bsc#1262719

* bsc#1269790

Cross-

* CVE-2026-11979

* CVE-2026-6732

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

* CVE-2026-6732 ( SUSE ): 6.0

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

* CVE-2026-6732 ( SUSE ): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22636-1
Release Date: 2026-07-13T07:49:58Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow SuSE important libxml2

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