SUSE-SU-2026:0148-1: important: Security update for the Linux Kernel RT (Live Patch 0 for SUSE Linux Enterprise 15 SP7)

Mon Jan 19 08:30:11 UTC 2026

# Security update for the Linux Kernel RT (Live Patch 0 for SUSE Linux
Enterprise 15 SP7)

Announcement ID: SUSE-SU-2026:0148-1  
Release Date: 2026-01-17T12:04:20Z  
Rating: important  
References:

  * bsc#1248400
  * bsc#1248670
  * bsc#1249241
  * bsc#1250192
  * bsc#1251203
  * bsc#1251787
  * bsc#1253437

Cross-References:

  * CVE-2023-53676
  * CVE-2025-38476
  * CVE-2025-38572
  * CVE-2025-38588
  * CVE-2025-38608
  * CVE-2025-39682
  * CVE-2025-40204

CVSS scores:

  * 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-2025-38476 ( 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-2025-38476 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38476 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38572 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-38572 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38572 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38588 ( 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-2025-38588 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-38588 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-38608 ( 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-2025-38608 ( SUSE ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2025-38608 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-39682 ( SUSE ):  7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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:

  * SUSE Linux Enterprise Live Patching 15-SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves seven vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise kernel 6.4.0-150700.5 fixes various
security issues

The following security issues were fixed:

  * CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in
    lio_target_nacl_info_show() (bsc#1251787).
  * CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline()
    (bsc#1251203).
  * CVE-2025-38572: ipv6: reject malicious packets in ipv6_gso_segment()
    (bsc#1248400).
  * CVE-2025-38588: ipv6: prevent infinite loop in rt6_nlmsg_size()
    (bsc#1249241).
  * CVE-2025-38608: bpf, ktls: Fix data corruption when using bpf_msg_pop_data()
    in ktls (bsc#1248670).
  * CVE-2025-39682: tls: fix handling of zero-length records on the rx_list
    (bsc#1250192).
  * CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437).

## 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:

  * SUSE Linux Enterprise Live Patching 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP7-2026-148=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    * kernel-livepatch-6_4_0-150700_5-rt-9-150700.3.1
    * kernel-livepatch-6_4_0-150700_5-rt-debuginfo-9-150700.3.1
    * kernel-livepatch-SLE15-SP7-RT_Update_0-debugsource-9-150700.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-53676.html
  * https://www.suse.com/security/cve/CVE-2025-38476.html
  * https://www.suse.com/security/cve/CVE-2025-38572.html
  * https://www.suse.com/security/cve/CVE-2025-38588.html
  * https://www.suse.com/security/cve/CVE-2025-38608.html
  * https://www.suse.com/security/cve/CVE-2025-39682.html
  * https://www.suse.com/security/cve/CVE-2025-40204.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1248400
  * https://bugzilla.suse.com/show_bug.cgi?id=1248670
  * https://bugzilla.suse.com/show_bug.cgi?id=1249241
  * https://bugzilla.suse.com/show_bug.cgi?id=1250192
  * https://bugzilla.suse.com/show_bug.cgi?id=1251203
  * https://bugzilla.suse.com/show_bug.cgi?id=1251787
  * https://bugzilla.suse.com/show_bug.cgi?id=1253437

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