SUSE-SU-2026:0034-1: important: Security update for the Linux Kernel

SLE-SECURITY-UPDATES null at suse.de
Tue Jan 6 08:30:10 UTC 2026 


# 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

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