SUSE-SU-2026:21951-1: important: Security update for libsoup

[SLE-SECURITY-UPDATES]

# Security update for libsoup

Announcement ID: SUSE-SU-2026:21951-1  
Release Date: 2026-05-29T13:40:32Z  
Rating: important  
References:

  * bsc#1259767

  
Cross-References:

  * 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 6.2

  
  
An update that solves one vulnerability can now be installed.

## Description:

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 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-826=1

## Package List:

  * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64)
    * libsoup-debugsource-3.6.6-160000.2.1
    * libsoup-3_0-0-3.6.6-160000.2.1
    * libsoup-3_0-0-debuginfo-3.6.6-160000.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-4271.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1259767

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