openSUSE 15.4 Kernel Important Security Fix SUSE-SU-2026-1718-1
opensuse
May 6, 2026
An update that solves five vulnerabilities can now be installed.
Description
This update for the SUSE Linux Enterprise kernel 5.14.21-150400.24.164 fixes
various security issues
The following security issues were fixed:
* CVE-2025-38375: virtio-net: ensure the received length does not exceed
allocated size (bsc#1258073).
* CVE-2025-39977: futex: Prevent use-after-free during requeue-PI
(bsc#1252048).
* CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and
rt_del_uncached_list() (bsc#1258655).
* CVE-2026-23204: net/sched: cls_u32: use skb_header_pointer_careful()
(bsc#1259126).
* CVE-2026-31431: crypto: algif_aead - Revert to operating out-of-place
(bsc#1263689).
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 15.4
zypper in -t patch SUSE-2026-1718=1
* SUSE Linux Enterprise Live Patching 15-SP4
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-1718=1
Package List
* openSUSE Leap 15.4 (ppc64le s390x x86_64)
* kernel-livepatch-SLE15-SP4_Update_40-debugsource-18-150400.2.1
* kernel-livepatch-5_14_21-150400_24_164-default-debuginfo-18-150400.2.1
* kernel-livepatch-5_14_21-150400_24_164-default-18-150400.2.1
* SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
* kernel-livepatch-SLE15-SP4_Update_40-debugsource-18-150400.2.1
* kernel-livepatch-5_14_21-150400_24_164-default-debuginfo-18-150400.2.1
* kernel-livepatch-5_14_21-150400_24_164-default-18-150400.2.1
References
* bsc#1252048
* bsc#1258073
* bsc#1258655
* bsc#1259126
* bsc#1263689
## References:
* https://www.suse.com/security/cve/CVE-2025-38375.html
* https://www.suse.com/security/cve/CVE-2025-39977.html
* https://www.suse.com/security/cve/CVE-2026-23004.html
* https://www.suse.com/security/cve/CVE-2026-23204.html
* https://www.suse.com/security/cve/CVE-2026-31431.html
* https://bugzilla.suse.com/show_bug.cgi?id=1252048
* https://bugzilla.suse.com/show_bug.cgi?id=1258073
* https://bugzilla.suse.com/show_bug.cgi?id=1258655
* https://bugzilla.suse.com/show_bug.cgi?id=1259126
* https://bugzilla.suse.com/show_bug.cgi?id=1263689
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2026:1718-1
Release Date: 2026-05-06T12:33:52Z
Affected Products:
* openSUSE Leap 15.4
* SUSE Linux Enterprise High Performance Computing 15 SP4
* SUSE Linux Enterprise Live Patching 15-SP4
* SUSE Linux Enterprise Micro 5.3
* SUSE Linux Enterprise Micro 5.4
* SUSE Linux Enterprise Real Time 15 SP4
* SUSE Linux Enterprise Server 15 SP4
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
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