Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2026:0034-1
Release Date:	2026-01-05T19:29:30Z
Rating:	important
References:	bsc#1233640 bsc#1249806 bsc#1251786 bsc#1252267 bsc#1252780 bsc#1252862 bsc#1253367 bsc#1253431 bsc#1253436
Cross-References:	CVE-2022-50280 CVE-2023-53676 CVE-2024-53093 CVE-2025-40040 CVE-2025-40048 CVE-2025-40121 CVE-2025-40154 CVE-2025-40204
CVSS scores:	CVE-2022-50280 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2022-50280 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-53676 ( SUSE ): 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2023-53676 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2024-53093 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2024-53093 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2024-53093 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2025-40040 ( SUSE ): 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2025-40040 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2025-40048 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2025-40121 ( SUSE ): 7.1 CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2025-40121 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2025-40154 ( SUSE ): 7.1 CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVE-2025-40154 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2025-40204 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2025-40204 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products:	openSUSE Leap 15.5 SUSE Linux Enterprise Micro 5.5

An update that solves eight vulnerabilities and has one security fix can now be installed.

Description:

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-50280: pnode: terminate at peers of source (bsc#1249806).
• CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251786).
• CVE-2024-53093: nvme-multipath: defer partition scanning (bsc#1233640).
• CVE-2025-40040: mm/ksm: fix flag-dropping behavior in ksm_madvise (bsc#1252780).
• CVE-2025-40048: uio_hv_generic: Let userspace take care of interrupt mask (bsc#1252862).
• CVE-2025-40121: ASoC: Intel: bytcr_rt5651: Fix invalid quirk input mapping (bsc#1253367).
• CVE-2025-40154: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (bsc#1253431).
• CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253436).

The following non-security bugs were fixed:

• Fix type signess in fbcon_set_font() (bsc#1252033).
• scsi: storvsc: Prefer returning channel with the same CPU as on the I/O issuing CPU (bsc#1252267).

Special Instructions and Notes:

• Please reboot the system after installing this update.

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 15.5
  zypper in -t patch SUSE-2026-34=1
• SUSE Linux Enterprise Micro 5.5
  zypper in -t patch SUSE-SLE-Micro-5.5-2026-34=1

Package List:

• openSUSE Leap 15.5 (noarch)
  • kernel-devel-rt-5.14.21-150500.13.115.1
  • kernel-source-rt-5.14.21-150500.13.115.1
• openSUSE Leap 15.5 (x86_64)
  • kernel-rt-devel-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt_debug-debuginfo-5.14.21-150500.13.115.2
  • ocfs2-kmp-rt-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt-vdso-debuginfo-5.14.21-150500.13.115.2
  • reiserfs-kmp-rt-5.14.21-150500.13.115.2
  • kernel-rt_debug-vdso-5.14.21-150500.13.115.2
  • kernel-syms-rt-5.14.21-150500.13.115.1
  • kselftests-kmp-rt-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt-extra-5.14.21-150500.13.115.2
  • kernel-rt-optional-5.14.21-150500.13.115.2
  • kernel-rt-livepatch-devel-5.14.21-150500.13.115.2
  • ocfs2-kmp-rt-5.14.21-150500.13.115.2
  • kernel-rt-livepatch-5.14.21-150500.13.115.2
  • dlm-kmp-rt-5.14.21-150500.13.115.2
  • kernel-rt-debugsource-5.14.21-150500.13.115.2
  • kernel-rt-vdso-5.14.21-150500.13.115.2
  • cluster-md-kmp-rt-5.14.21-150500.13.115.2
  • kernel-rt_debug-debugsource-5.14.21-150500.13.115.2
  • kernel-rt-devel-5.14.21-150500.13.115.2
  • reiserfs-kmp-rt-debuginfo-5.14.21-150500.13.115.2
  • dlm-kmp-rt-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt_debug-vdso-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt_debug-devel-debuginfo-5.14.21-150500.13.115.2
  • cluster-md-kmp-rt-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt-extra-debuginfo-5.14.21-150500.13.115.2
  • gfs2-kmp-rt-5.14.21-150500.13.115.2
  • kernel-rt_debug-devel-5.14.21-150500.13.115.2
  • gfs2-kmp-rt-debuginfo-5.14.21-150500.13.115.2
  • kselftests-kmp-rt-5.14.21-150500.13.115.2
  • kernel-rt-debuginfo-5.14.21-150500.13.115.2
  • kernel-rt-optional-debuginfo-5.14.21-150500.13.115.2
• openSUSE Leap 15.5 (nosrc x86_64)
  • kernel-rt-5.14.21-150500.13.115.2
  • kernel-rt_debug-5.14.21-150500.13.115.2
• SUSE Linux Enterprise Micro 5.5 (noarch)
  • kernel-devel-rt-5.14.21-150500.13.115.1
  • kernel-source-rt-5.14.21-150500.13.115.1
• SUSE Linux Enterprise Micro 5.5 (nosrc x86_64)
  • kernel-rt-5.14.21-150500.13.115.2
• SUSE Linux Enterprise Micro 5.5 (x86_64)
  • kernel-rt-debugsource-5.14.21-150500.13.115.2
  • kernel-rt-debuginfo-5.14.21-150500.13.115.2

References:

• https://www.suse.com/security/cve/CVE-2022-50280.html
• https://www.suse.com/security/cve/CVE-2023-53676.html
• https://www.suse.com/security/cve/CVE-2024-53093.html
• https://www.suse.com/security/cve/CVE-2025-40040.html
• https://www.suse.com/security/cve/CVE-2025-40048.html
• https://www.suse.com/security/cve/CVE-2025-40121.html
• https://www.suse.com/security/cve/CVE-2025-40154.html
• https://www.suse.com/security/cve/CVE-2025-40204.html
• https://bugzilla.suse.com/show_bug.cgi?id=1233640
• https://bugzilla.suse.com/show_bug.cgi?id=1249806
• https://bugzilla.suse.com/show_bug.cgi?id=1251786
• https://bugzilla.suse.com/show_bug.cgi?id=1252267
• https://bugzilla.suse.com/show_bug.cgi?id=1252780
• https://bugzilla.suse.com/show_bug.cgi?id=1252862
• https://bugzilla.suse.com/show_bug.cgi?id=1253367
• https://bugzilla.suse.com/show_bug.cgi?id=1253431
• https://bugzilla.suse.com/show_bug.cgi?id=1253436