SUSE-SU-2023:2687-1: important: Security update for the Linux Kernel (Live Patch 40 for SLE 15 SP1)

[sle-updates at lists.suse.com]

# Security update for the Linux Kernel (Live Patch 40 for SLE 15 SP1)

Announcement ID: SUSE-SU-2023:2687-1  
Rating: important  
References:

  * #1210452
  * #1210989

  
Cross-References:

  * CVE-2023-28466
  * CVE-2023-31436

  
CVSS scores:

  * CVE-2023-28466 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-28466 ( NVD ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-31436 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-31436 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 15 SP1
  * SUSE Linux Enterprise Live Patching 15-SP1
  * SUSE Linux Enterprise Server 15 SP1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP1

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 4.12.14-150100_197_145 fixes several issues.

The following security issues were fixed:

  * CVE-2023-31436: Fixed an out-of-bounds write in qfq_change_class() because
    lmax can exceed QFQ_MIN_LMAX (bsc#1210989).
  * CVE-2023-28466: Fixed race condition that could lead to use-after-free or
    NULL pointer dereference in do_tls_getsockopt in net/tls/tls_main.c
    (bsc#1210452).

## Patch Instructions:

To install this SUSE Important 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-SP1  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2023-2687=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP1 (ppc64le x86_64)
    * kernel-livepatch-4_12_14-150100_197_145-default-3-150100.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-28466.html
  * https://www.suse.com/security/cve/CVE-2023-31436.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1210452
  * https://bugzilla.suse.com/show_bug.cgi?id=1210989

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