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SUSE Linux Micro 6.1 libsoup Important Use-After-Free Bug Fix 2026-21879-1

suse
Calendar Grey June 2, 2026
Dist Suse Esm H88
SUSE Micro 6.1 urgent update for libsoup addresses critical issues. Install necessary patches now for system protection!
An update that solves one vulnerability can now be installed.

Summary

## This update for libsoup fixes the following issue * CVE-2026-4271: use-after-free in the HTTP/2 server when user signal handlers disconnect connections during callback execution (bsc#1259767). ## 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 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-556=1 ## Package List: * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64) * libsoup-debugsource-3.4.4-slfo.1.1_9.1 * libsoup-3_0-0-debuginfo-3.4.4-slfo.1.1_9.1 * libsoup-3_0-0-3.4.4-slfo.1.1_9.1

Topics%20covered

Topics Covered

security advisory SuSE important libsoup CVE use-after-free

References

* bsc#1259767

Cross-

* CVE-2026-4271

CVSS scores:

* CVE-2026-4271 ( SUSE ): 8.8

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

* CVE-2026-4271 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

* CVE-2026-4271 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-4271 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

* SUSE Linux Micro 6.1

An update that solves one vulnerability can now be installed.

##

* https://www.suse.com/security/cve/CVE-2026-4271.html

* https://bugzilla.suse.com/show_bug.cgi?id=1259767

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21879-1
Release Date: 2026-06-01T10:09:20Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important libsoup CVE use-after-free

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