SUSE-SU-2023:3846-1: important: Security update for the Linux Kernel (Live Patch 36 for SLE 15 SP2)

Thu Sep 28 08:30:04 UTC 2023

# Security update for the Linux Kernel (Live Patch 36 for SLE 15 SP2)

Announcement ID: SUSE-SU-2023:3846-1  
Rating: important  
References:

  * #1210619
  * #1213587
  * #1213706
  * #1214123
  * #1215119

Cross-References:

  * CVE-2023-1829
  * CVE-2023-3609
  * CVE-2023-3776
  * CVE-2023-3812
  * CVE-2023-4273

CVSS scores:

  * CVE-2023-1829 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-1829 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3609 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3609 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3776 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3776 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3812 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3812 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-4273 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-4273 ( NVD ):  6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected Products:

  * SUSE Linux Enterprise High Performance Computing 15 SP2
  * SUSE Linux Enterprise Live Patching 15-SP2
  * SUSE Linux Enterprise Server 15 SP2
  * SUSE Linux Enterprise Server for SAP Applications 15 SP2

An update that solves five vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 5.3.18-150200_24_151 fixes several issues.

The following security issues were fixed:

  * CVE-2023-3776: Fixed improper refcount update in cls_fw leads to use-after-
    free (bsc#1215119).
  * CVE-2023-1829: Fixed a use-after-free vulnerability in the control index
    filter (tcindex) (bsc#1210619).
  * CVE-2023-4273: Fixed a flaw in the exFAT driver of the Linux kernel that
    alloawed a local privileged attacker to overflow the kernel stack
    (bsc#1214123).
  * CVE-2023-3609: Fixed reference counter leak leading to overflow in net/sched
    (bsc#1213587).
  * CVE-2023-3812: Fixed an out-of-bounds memory access flaw in the TUN/TAP
    device driver functionality that could allow a local user to crash or
    potentially escalate their privileges on the system (bsc#1213706).

## 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-SP2  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2023-3846=1 SUSE-SLE-
Module-Live-Patching-15-SP2-2023-3847=1 SUSE-SLE-Module-Live-
Patching-15-SP2-2023-3848=1

## Package List:

  * SUSE Linux Enterprise Live Patching 15-SP2 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP2_Update_34-debugsource-7-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_148-default-debuginfo-6-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_151-default-debuginfo-6-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_151-default-6-150200.2.1
    * kernel-livepatch-SLE15-SP2_Update_35-debugsource-6-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_148-default-6-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_145-default-debuginfo-7-150200.2.1
    * kernel-livepatch-SLE15-SP2_Update_36-debugsource-6-150200.2.1
    * kernel-livepatch-5_3_18-150200_24_145-default-7-150200.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-1829.html
  * https://www.suse.com/security/cve/CVE-2023-3609.html
  * https://www.suse.com/security/cve/CVE-2023-3776.html
  * https://www.suse.com/security/cve/CVE-2023-3812.html
  * https://www.suse.com/security/cve/CVE-2023-4273.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1210619
  * https://bugzilla.suse.com/show_bug.cgi?id=1213587
  * https://bugzilla.suse.com/show_bug.cgi?id=1213706
  * https://bugzilla.suse.com/show_bug.cgi?id=1214123
  * https://bugzilla.suse.com/show_bug.cgi?id=1215119

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