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SUSE alert SUSE-SU-2026:0928-1 (kernel)



From:
              OPENSUSE-SECURITY-UPDATES <null@suse.de>


To:
              security-announce@lists.opensuse.org


Subject:
              SUSE-SU-2026:0928-1: important: Security update for the Linux Kernel


Date:
              Wed, 18 Mar 2026 20:41:36 -0000


Message-ID:
              <177386649625.210.4666230441273431482@940e0c7761a0>


Archive-link:
              Article




# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2026:0928-1  
Release Date: 2026-03-18T13:32:23Z  
Rating: important  
References:

  * bsc#1238917
  * bsc#1246166
  * bsc#1247177
  * bsc#1255049
  * bsc#1255163
  * bsc#1255401
  * bsc#1256645
  * bsc#1257231
  * bsc#1257735
  * bsc#1257749
  * bsc#1257790
  * bsc#1258340
  * bsc#1258395
  * bsc#1258849
  * jsc#PED-12836

  
Cross-References:

  * CVE-2023-53794
  * CVE-2023-53827
  * CVE-2025-21738
  * CVE-2025-38224
  * CVE-2025-38375
  * CVE-2025-68285
  * CVE-2025-71066
  * CVE-2026-23004
  * CVE-2026-23060
  * CVE-2026-23074
  * CVE-2026-23089
  * CVE-2026-23191
  * CVE-2026-23204

  
CVSS scores:

  * CVE-2023-53794 ( SUSE ):  7.7
    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2023-53794 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-53827 ( 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-2023-53827 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21738 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-21738 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-21738 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-38224 ( SUSE ):  6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-38224 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2025-38375 ( 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-2025-38375 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38375 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-68285 ( 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-2025-68285 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-71066 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23004 ( 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-2026-23004 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23060 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23060 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23060 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-23074 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23074 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23089 ( SUSE ):  5.2
    CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23089 ( SUSE ):  5.9 CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2026-23089 ( 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 ( 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 ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23204 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-23204 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.3
  * SUSE Linux Enterprise Micro 5.2
  * SUSE Linux Enterprise Micro for Rancher 5.2

  
  
An update that solves 13 vulnerabilities, contains one feature and has one
security fix can now be installed.

## Description:

The SUSE Linux Enterprise 15 SP3 kernel was updated to fix various security
issues

The following security issues were fixed:

  * CVE-2023-53794: cifs: fix session state check in reconnect to avoid use-
    after-free issue (bsc#1255163).
  * CVE-2023-53827: Bluetooth: L2CAP: Fix use-after-free in
    l2cap_disconnect_{req,rsp} (bsc#1255049).
  * CVE-2025-21738: ata: libata-sff: Ensure that we cannot write outside the
    allocated buffer (bsc#1238917).
  * CVE-2025-38375: virtio-net: ensure the received length does not exceed
    allocated size (bsc#1247177).
  * CVE-2025-68285: libceph: fix potential use-after-free in
    have_mon_and_osd_map() (bsc#1255401).
  * CVE-2025-71066: net/sched: ets: Always remove class from active list before
    deleting in ets_qdisc_change (bsc#1256645).
  * CVE-2026-23004: dst: fix races in rt6_uncached_list_del() and
    rt_del_uncached_list() (bsc#1257231).
  * CVE-2026-23060: crypto: authencesn - reject too-short AAD (assoclen<8) to
    match ESP/ESN spec (bsc#1257735).
  * CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc
    (bsc#1257749).
  * CVE-2026-23089: ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free()
    (bsc#1257790).
  * CVE-2026-23191: ALSA: aloop: Fix racy access at PCM trigger (bsc#1258395).
  * CVE-2026-23204: net: add skb_header_pointer_careful() helper (bsc#1258340).

The following non security issues were fixed:

  * apparmor: fix differential encoding verification (bsc#1258849).
  * apparmor: Fix double free of ns_name in aa_replace_profiles() (bsc#1258849).
  * apparmor: fix memory leak in verify_header (bsc#1258849).
  * apparmor: fix missing bounds check on DEFAULT table in verify_dfa()
    (bsc#1258849).
  * apparmor: fix side-effect bug in match_char() macro usage (bsc#1258849).
  * apparmor: fix unprivileged local user can do privileged policy management
    (bsc#1258849).
  * apparmor: fix: limit the number of levels of policy namespaces
    (bsc#1258849).
  * apparmor: replace recursive profile removal with iterative approach
    (bsc#1258849).
  * apparmor: validate DFA start states are in bounds in unpack_pdb
    (bsc#1258849).

## 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 15.3  
    zypper in -t patch SUSE-2026-928=1

  * SUSE Linux Enterprise Micro 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-928=1

  * SUSE Linux Enterprise Micro for Rancher 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-928=1

## Package List:

  * openSUSE Leap 15.3 (noarch nosrc)
    * kernel-docs-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (noarch)
    * kernel-source-5.3.18-150300.59.238.1
    * kernel-source-vanilla-5.3.18-150300.59.238.1
    * kernel-macros-5.3.18-150300.59.238.1
    * kernel-devel-5.3.18-150300.59.238.1
    * kernel-docs-html-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64)
    * ocfs2-kmp-default-5.3.18-150300.59.238.1
    * dlm-kmp-default-5.3.18-150300.59.238.1
    * kernel-obs-build-5.3.18-150300.59.238.1
    * kernel-obs-build-debugsource-5.3.18-150300.59.238.1
    * kernel-default-optional-debuginfo-5.3.18-150300.59.238.1
    * kernel-obs-qa-5.3.18-150300.59.238.1
    * gfs2-kmp-default-5.3.18-150300.59.238.1
    * reiserfs-kmp-default-debuginfo-5.3.18-150300.59.238.1
    * reiserfs-kmp-default-5.3.18-150300.59.238.1
    * kernel-default-devel-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-debuginfo-5.3.18-150300.59.238.1
    * cluster-md-kmp-default-5.3.18-150300.59.238.1
    * ocfs2-kmp-default-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-base-rebuild-5.3.18-150300.59.238.1.150300.18.142.1
    * kernel-default-livepatch-5.3.18-150300.59.238.1
    * kernel-default-extra-debuginfo-5.3.18-150300.59.238.1
    * kselftests-kmp-default-5.3.18-150300.59.238.1
    * dlm-kmp-default-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-base-5.3.18-150300.59.238.1.150300.18.142.1
    * kernel-default-extra-5.3.18-150300.59.238.1
    * kselftests-kmp-default-debuginfo-5.3.18-150300.59.238.1
    * gfs2-kmp-default-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-optional-5.3.18-150300.59.238.1
    * cluster-md-kmp-default-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-debugsource-5.3.18-150300.59.238.1
    * kernel-default-devel-5.3.18-150300.59.238.1
    * kernel-syms-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 nosrc)
    * kernel-default-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (ppc64le s390x x86_64)
    * kernel-default-livepatch-devel-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (nosrc ppc64le x86_64)
    * kernel-kvmsmall-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (ppc64le x86_64)
    * kernel-kvmsmall-debugsource-5.3.18-150300.59.238.1
    * kernel-kvmsmall-devel-debuginfo-5.3.18-150300.59.238.1
    * kernel-kvmsmall-debuginfo-5.3.18-150300.59.238.1
    * kernel-kvmsmall-devel-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (aarch64 x86_64)
    * ocfs2-kmp-preempt-5.3.18-150300.59.238.1
    * dlm-kmp-preempt-debuginfo-5.3.18-150300.59.238.1
    * reiserfs-kmp-preempt-5.3.18-150300.59.238.1
    * kernel-preempt-devel-5.3.18-150300.59.238.1
    * kernel-preempt-extra-5.3.18-150300.59.238.1
    * cluster-md-kmp-preempt-5.3.18-150300.59.238.1
    * kernel-preempt-optional-5.3.18-150300.59.238.1
    * kernel-preempt-optional-debuginfo-5.3.18-150300.59.238.1
    * ocfs2-kmp-preempt-debuginfo-5.3.18-150300.59.238.1
    * kernel-preempt-extra-debuginfo-5.3.18-150300.59.238.1
    * kernel-preempt-devel-debuginfo-5.3.18-150300.59.238.1
    * gfs2-kmp-preempt-debuginfo-5.3.18-150300.59.238.1
    * kernel-preempt-debugsource-5.3.18-150300.59.238.1
    * reiserfs-kmp-preempt-debuginfo-5.3.18-150300.59.238.1
    * kselftests-kmp-preempt-debuginfo-5.3.18-150300.59.238.1
    * kernel-preempt-debuginfo-5.3.18-150300.59.238.1
    * cluster-md-kmp-preempt-debuginfo-5.3.18-150300.59.238.1
    * dlm-kmp-preempt-5.3.18-150300.59.238.1
    * gfs2-kmp-preempt-5.3.18-150300.59.238.1
    * kselftests-kmp-preempt-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (aarch64 nosrc x86_64)
    * kernel-preempt-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (nosrc s390x)
    * kernel-zfcpdump-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (s390x)
    * kernel-zfcpdump-debuginfo-5.3.18-150300.59.238.1
    * kernel-zfcpdump-debugsource-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (nosrc)
    * dtb-aarch64-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (aarch64)
    * dtb-altera-5.3.18-150300.59.238.1
    * reiserfs-kmp-64kb-5.3.18-150300.59.238.1
    * gfs2-kmp-64kb-5.3.18-150300.59.238.1
    * kselftests-kmp-64kb-debuginfo-5.3.18-150300.59.238.1
    * dtb-socionext-5.3.18-150300.59.238.1
    * ocfs2-kmp-64kb-debuginfo-5.3.18-150300.59.238.1
    * dtb-marvell-5.3.18-150300.59.238.1
    * dtb-xilinx-5.3.18-150300.59.238.1
    * dtb-cavium-5.3.18-150300.59.238.1
    * dtb-zte-5.3.18-150300.59.238.1
    * kernel-64kb-extra-5.3.18-150300.59.238.1
    * dtb-sprd-5.3.18-150300.59.238.1
    * gfs2-kmp-64kb-debuginfo-5.3.18-150300.59.238.1
    * kselftests-kmp-64kb-5.3.18-150300.59.238.1
    * kernel-64kb-optional-5.3.18-150300.59.238.1
    * dtb-broadcom-5.3.18-150300.59.238.1
    * dtb-apm-5.3.18-150300.59.238.1
    * kernel-64kb-debuginfo-5.3.18-150300.59.238.1
    * kernel-64kb-devel-debuginfo-5.3.18-150300.59.238.1
    * ocfs2-kmp-64kb-5.3.18-150300.59.238.1
    * dtb-amd-5.3.18-150300.59.238.1
    * dtb-mediatek-5.3.18-150300.59.238.1
    * dtb-nvidia-5.3.18-150300.59.238.1
    * kernel-64kb-optional-debuginfo-5.3.18-150300.59.238.1
    * dtb-hisilicon-5.3.18-150300.59.238.1
    * cluster-md-kmp-64kb-debuginfo-5.3.18-150300.59.238.1
    * cluster-md-kmp-64kb-5.3.18-150300.59.238.1
    * dlm-kmp-64kb-5.3.18-150300.59.238.1
    * kernel-64kb-extra-debuginfo-5.3.18-150300.59.238.1
    * dtb-amlogic-5.3.18-150300.59.238.1
    * kernel-64kb-devel-5.3.18-150300.59.238.1
    * dtb-exynos-5.3.18-150300.59.238.1
    * dtb-freescale-5.3.18-150300.59.238.1
    * dtb-renesas-5.3.18-150300.59.238.1
    * dlm-kmp-64kb-debuginfo-5.3.18-150300.59.238.1
    * dtb-arm-5.3.18-150300.59.238.1
    * dtb-allwinner-5.3.18-150300.59.238.1
    * kernel-64kb-debugsource-5.3.18-150300.59.238.1
    * dtb-qcom-5.3.18-150300.59.238.1
    * dtb-lg-5.3.18-150300.59.238.1
    * dtb-al-5.3.18-150300.59.238.1
    * dtb-rockchip-5.3.18-150300.59.238.1
    * reiserfs-kmp-64kb-debuginfo-5.3.18-150300.59.238.1
  * openSUSE Leap 15.3 (aarch64 nosrc)
    * kernel-64kb-5.3.18-150300.59.238.1
  * SUSE Linux Enterprise Micro 5.2 (aarch64 nosrc s390x x86_64)
    * kernel-default-5.3.18-150300.59.238.1
  * SUSE Linux Enterprise Micro 5.2 (aarch64 x86_64)
    * kernel-default-base-5.3.18-150300.59.238.1.150300.18.142.1
  * SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64)
    * kernel-default-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-debugsource-5.3.18-150300.59.238.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 nosrc s390x x86_64)
    * kernel-default-5.3.18-150300.59.238.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 x86_64)
    * kernel-default-base-5.3.18-150300.59.238.1.150300.18.142.1
  * SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 s390x x86_64)
    * kernel-default-debuginfo-5.3.18-150300.59.238.1
    * kernel-default-debugsource-5.3.18-150300.59.238.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-53794.html
  * https://www.suse.com/security/cve/CVE-2023-53827.html
  * https://www.suse.com/security/cve/CVE-2025-21738.html
  * https://www.suse.com/security/cve/CVE-2025-38224.html
  * https://www.suse.com/security/cve/CVE-2025-38375.html
  * https://www.suse.com/security/cve/CVE-2025-68285.html
  * https://www.suse.com/security/cve/CVE-2025-71066.html
  * https://www.suse.com/security/cve/CVE-2026-23004.html
  * https://www.suse.com/security/cve/CVE-2026-23060.html
  * https://www.suse.com/security/cve/CVE-2026-23074.html
  * https://www.suse.com/security/cve/CVE-2026-23089.html
  * https://www.suse.com/security/cve/CVE-2026-23191.html
  * https://www.suse.com/security/cve/CVE-2026-23204.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1238917
  * https://bugzilla.suse.com/show_bug.cgi?id=1246166
  * https://bugzilla.suse.com/show_bug.cgi?id=1247177
  * https://bugzilla.suse.com/show_bug.cgi?id=1255049
  * https://bugzilla.suse.com/show_bug.cgi?id=1255163
  * https://bugzilla.suse.com/show_bug.cgi?id=1255401
  * https://bugzilla.suse.com/show_bug.cgi?id=1256645
  * https://bugzilla.suse.com/show_bug.cgi?id=1257231
  * https://bugzilla.suse.com/show_bug.cgi?id=1257735
  * https://bugzilla.suse.com/show_bug.cgi?id=1257749
  * https://bugzilla.suse.com/show_bug.cgi?id=1257790
  * https://bugzilla.suse.com/show_bug.cgi?id=1258340
  * https://bugzilla.suse.com/show_bug.cgi?id=1258395
  * https://bugzilla.suse.com/show_bug.cgi?id=1258849
  * https://jira.suse.com/browse/PED-12836





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