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openSUSE xz Significant Buffer Overflow Resolution SUSE-SU-2026-2051-1

opensuse
Calendar Grey May 25, 2026
Dist Opensuse Esm H88
Critical update for openSUSE Fixes CVE-2026-34743 buffer overflow risk in xz with important severity rating.
An update that solves one vulnerability can now be installed.

Description

This update for xz fixes the following issue

* CVE-2026-34743: buffer overflow in lzma_index_append() (bsc#1261280).

Topics%20covered

Topics Covered

security advisory buffer overflow important OpenSUSE xz cve-2026-34743

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:

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-2051=1

* Basesystem Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2051=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2051=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2051=1

Package List

* openSUSE Leap 15.6 (x86_64)

* xz-devel-32bit-5.4.1-150600.3.6.1

* liblzma5-32bit-debuginfo-5.4.1-150600.3.6.1

* liblzma5-32bit-5.4.1-150600.3.6.1

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)

* xz-static-devel-5.4.1-150600.3.6.1

* xz-debugsource-5.4.1-150600.3.6.1

* xz-debuginfo-5.4.1-150600.3.6.1

* xz-devel-5.4.1-150600.3.6.1

* xz-5.4.1-150600.3.6.1

* liblzma5-debuginfo-5.4.1-150600.3.6.1

* liblzma5-5.4.1-150600.3.6.1

* openSUSE Leap 15.6 (aarch64_ilp32)

* xz-devel-64bit-5.4.1-150600.3.6.1

* liblzma5-64bit-5.4.1-150600.3.6.1

* liblzma5-64bit-debuginfo-5.4.1-150600.3.6.1

* openSUSE Leap 15.6 (noarch)

* xz-lang-5.4.1-150600.3.6.1

* Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)

* xz-static-devel-5.4.1-150600.3.6.1

* xz-debugsource-5.4.1-150600.3.6.1

* xz-debuginfo-5.4.1-150600.3.6.1

* xz-devel-5.4.1-150600.3.6.1

* xz-5.4.1-150600.3.6.1

* liblzma5-debuginfo-5.4.1-150600.3.6.1

* liblzma5-5.4.1-150600.3.6.1

* Basesystem Module 15-SP7 (noarch)

* xz-lang-5.4.1-150600.3.6.1

* Basesystem Module...

Read the Full Advisory

References

* bsc#1261280

## References:

* https://www.suse.com/security/cve/CVE-2026-34743.html

* https://bugzilla.suse.com/show_bug.cgi?id=1261280

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2051-1
Release Date: 2026-05-25T13:59:52Z
Affected Products: * Basesystem Module 15-SP7 * openSUSE Leap 15.6 * SUSE Linux Enterprise Desktop 15 SP7 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory buffer overflow important OpenSUSE xz cve-2026-34743

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