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SUSE xz Notable Buffer Overflow Vulnerability Update 2026-21848-1

suse
Calendar Grey June 1, 2026
Dist Suse Esm H88
Critical security update for xz in SUSE addresses important buffer overflow issue. Immediate action recommended.
An update that solves one vulnerability can now be installed.

Summary

## This update for xz fixes the following issue * CVE-2026-34743: buffer overflow in lzma_index_append() (bsc#1261280). ## 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 for SAP applications 16.0 zypper in -t patch SUSE-SLES-16.0-803=1 * SUSE Linux Enterprise Server 16.0 zypper in -t patch SUSE-SLES-16.0-803=1 ## Package List: * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64) * xz-5.8.1-160000.3.1 * liblzma5-debuginfo-5.8.1-160000.3.1 * xz-devel-5.8.1-160000.3.1 * xz-debugsource-5.8.1-160000.3.1 * xz-debuginfo-5.8.1-160000.3.1 * liblzma5-5.8.1-160000.3.1

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE patch important xz

References

* bsc#1261280

Cross-

* CVE-2026-34743

CVSS scores:

* CVE-2026-34743 ( SUSE ): 7.5

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

* CVE-2026-34743 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-34743 ( NVD ): 1.7

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/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-2026-34743 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products:

* SUSE Linux Enterprise Server 16.0

* SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves one vulnerability can now be installed.

##

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21848-1
Release Date: 2026-05-26T12:14:16Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE patch important xz

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