SUSE Linux Micro Critical libsoup UAF Vulnerability CVE-2026-21951-1
suse
June 3, 2026
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 6.2 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
Topics Covered
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 6.2
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
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Severity
important
Lowest
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Medium
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Critical
Announcement ID: SUSE-SU-2026:21951-1
Release Date: 2026-05-29T13:40:32Z
Rating: important
Topics Covered
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