SUSE-SU-2026:4960-1: important: Security update for the Linux Kernel RT (Live Patch 20 for SUSE Linux Enterprise 15 SP7)

[SLE-SECURITY-UPDATES]

# Security update for the Linux Kernel RT (Live Patch 20 for SUSE Linux
Enterprise 15 SP7)

Announcement ID: SUSE-SU-2026:4960-1  
Release Date: 2026-10-31T14:04:49Z  
Rating: important  
References:

  * bsc#1280285
  * bsc#1280693
  * bsc#1280728
  * bsc#1280760
  * bsc#1285686

  
Cross-References:

  * CVE-2026-74469
  * CVE-2026-89544
  * CVE-2026-89551
  * CVE-2026-89674
  * CVE-2026-98432

  
CVSS scores:

  * CVE-2026-74469 ( 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-2026-74469 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-74469 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-89544 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-89544 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-89544 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-89551 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-89551 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-89551 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-89674 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-89674 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-98432 ( 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-2026-98432 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-98432 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  
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 five vulnerabilities can now be installed.

## Description:

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.75 fixes various
security issues:

The following security issues were fixed:

  * CVE-2026-74469: sctp: prevent peer transport count overflow (bsc#1280693).
  * CVE-2026-89544: SUNRPC: fix gssx_dec_option_array error path bugs
    (bsc#1280760).
  * CVE-2026-89551: SUNRPC: xdr_buf_trim: clamp buf->len to avoid underflow
    (bsc#1280728).
  * CVE-2026-89674: nfsd: fix XDR length calculation in
    nfsd4_ff_encode_layoutget (bsc#1280285).
  * CVE-2026-98432: ipv4: free inet_opt and ireq_opt after an RCU grace period
    (bsc#1285686).

## 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-SP7-2026-4960

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP7 (x86_64)
    * kernel-livepatch-SLE15-SP7-RT_Update_20-debugsource-3-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_75-rt-debuginfo-3-150700.2.1
    * kernel-livepatch-6_4_0-150700_7_75-rt-3-150700.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-74469.html
  * https://www.suse.com/security/cve/CVE-2026-89544.html
  * https://www.suse.com/security/cve/CVE-2026-89551.html
  * https://www.suse.com/security/cve/CVE-2026-89674.html
  * https://www.suse.com/security/cve/CVE-2026-98432.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1280285
  * https://bugzilla.suse.com/show_bug.cgi?id=1280693
  * https://bugzilla.suse.com/show_bug.cgi?id=1280728
  * https://bugzilla.suse.com/show_bug.cgi?id=1280760
  * https://bugzilla.suse.com/show_bug.cgi?id=1285686

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