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SUSE Linux Micro Expat Important DoS and NULL Pointer Fix 2026-21062-1

suse
Calendar Grey April 13, 2026
Dist Suse Esm H88
An important security update for expat resolves three critical issues in SUSE, including denial of service and NULL pointer issues.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for expat fixes the following issues: * CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity declaration value (bsc#1259726). * CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711). * CVE-2026-32778: NULL pointer dereference in `setContext` on retry after an out-of-memory condition (bsc#1259729). ## 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 Micro 6.0 zypper in -t patch SUSE-SLE-Micro-6.0-654=1 ## Package List: * SUSE Linux Micro 6.0 (aarch64 s390x x86_64) * libexpat1-debuginfo-2.7.1-5.1 * expat-debugsource-2.7.1-5.1

Topics%20covered

Topics Covered

security advisory denial of service SuSE important expat NULL pointer dereference

References

* bsc#1259711

* bsc#1259726

* bsc#1259729

Cross-

* CVE-2026-32776

* CVE-2026-32777

* CVE-2026-32778

CVSS scores:

* CVE-2026-32776 ( SUSE ): 8.7

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

* CVE-2026-32776 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-32776 ( NVD ): 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-32776 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-32777 ( SUSE ): 8.7

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

* CVE-2026-32777 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-32777 ( NVD ): 4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-32777 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21062-1
Release Date: 2026-04-07T18:52:25Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important expat NULL pointer dereference

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