Security update for the Linux Kernel (Live Patch 38 for SUSE Linux Enterprise 15 SP4)

Announcement ID: SUSE-SU-2026:1578-1
Release Date: 2026-04-23T16:06:07Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-23191 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-23191 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  • CVE-2026-23191 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23191 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23268 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • CVE-2026-23268 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2026-23268 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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

An update that solves two vulnerabilities can now be installed.

Description:

This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.158 fixes various security issues

The following security issues were fixed:

  • CVE-2026-23191: ALSA: aloop: Fix racy access at PCM trigger (bsc#1258396).
  • CVE-2026-23268: apparmor: fix unprivileged local user can do privileged policy management (bsc#1259859).

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-2026-1578=1
  • SUSE Linux Enterprise Live Patching 15-SP4
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-1578=1

Package List:

  • openSUSE Leap 15.4 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP4_Update_38-debugsource-17-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_158-default-debuginfo-17-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_158-default-17-150400.2.1
  • SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP4_Update_38-debugsource-17-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_158-default-debuginfo-17-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_158-default-17-150400.2.1

References: