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openSUSE Expat Important Major Threat Service Disruption Vuln 2026-1166-1

opensuse
Calendar Grey April 2, 2026
Dist Opensuse Esm H88
Major threat addressed in expat security update for openSUSE, resolving important vulnerabilities requiring installation.
An update that solves three vulnerabilities can now be installed.

Description

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).

Topics%20covered

Topics Covered

security advisory denial of service important service disruption OpenSUSE expat

Patch

## 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 Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-1166=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-1166=1

* SUSE Linux Enterprise Micro for Rancher 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-1166=1

* SUSE Linux Enterprise Micro 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-1166=1

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-1166=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1166=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1166=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5

zypper in -t patch...

Read the Full Advisory

Package List

* SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)

* libexpat1-debuginfo-2.7.1-150400.3.37.1

* expat-debuginfo-2.7.1-150400.3.37.1

* expat-debugsource-2.7.1-150400.3.37.1

* libexpat1-2.7.1-150400.3.37.1

* SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)

* libexpat1-debuginfo-2.7.1-150400.3.37.1

* expat-debuginfo-2.7.1-150400.3.37.1

* expat-debugsource-2.7.1-150400.3.37.1

* libexpat1-2.7.1-150400.3.37.1

* SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64)

* libexpat1-debuginfo-2.7.1-150400.3.37.1

* expat-debuginfo-2.7.1-150400.3.37.1

* expat-debugsource-2.7.1-150400.3.37.1

* libexpat1-2.7.1-150400.3.37.1

* SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64)

* libexpat1-debuginfo-2.7.1-150400.3.37.1

* expat-debuginfo-2.7.1-150400.3.37.1

* expat-debugsource-2.7.1-150400.3.37.1

* libexpat1-2.7.1-150400.3.37.1

* SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)

* libexpat1-debuginfo-2.7.1-150400.3.37.1

* expat-debuginfo-2.7.1-150400.3.37.1

*...

Read the Full Advisory

References

* bsc#1259711

* bsc#1259726

* bsc#1259729

## References:

* https://www.suse.com/security/cve/CVE-2026-32776.html

* https://www.suse.com/security/cve/CVE-2026-32777.html

* https://www.suse.com/security/cve/CVE-2026-32778.html

* https://bugzilla.suse.com/show_bug.cgi?id=1259711

* https://bugzilla.suse.com/show_bug.cgi?id=1259726

* https://bugzilla.suse.com/show_bug.cgi?id=1259729

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1166-1
Release Date: 2026-04-02T01:08:59Z
Affected Products: * openSUSE Leap 15.4 * openSUSE Leap 15.6 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP4 LTSS * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server 15 SP5 LTSS * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server for SAP Applications 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 * SUSE Linux Enterprise Server for SAP Applications 15 SP6

Topics%20covered

Topics Covered

security advisory denial of service important service disruption OpenSUSE expat

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