SUSE-SU-2023:3749-1: important: Security update for the Linux Kernel (Live Patch 45 for SLE 12 SP5)

[sle-security-updates at lists.suse.com]

# Security update for the Linux Kernel (Live Patch 45 for SLE 12 SP5)

Announcement ID: SUSE-SU-2023:3749-1  
Rating: important  
References:

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

  
Cross-References:

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

  
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

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Live Patching 12-SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 4.12.14-122_165 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-2023-3609: 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 12-SP5  
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2023-3749=1 SUSE-SLE-Live-
Patching-12-SP5-2023-3744=1 SUSE-SLE-Live-Patching-12-SP5-2023-3740=1 SUSE-SLE-
Live-Patching-12-SP5-2023-3746=1 SUSE-SLE-Live-Patching-12-SP5-2023-3754=1 SUSE-
SLE-Live-Patching-12-SP5-2023-3741=1 SUSE-SLE-Live-Patching-12-SP5-2023-3743=1
SUSE-SLE-Live-Patching-12-SP5-2023-3750=1 SUSE-SLE-Live-
Patching-12-SP5-2023-3742=1 SUSE-SLE-Live-Patching-12-SP5-2023-3745=1 SUSE-SLE-
Live-Patching-12-SP5-2023-3747=1

## Package List:

  * SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64)
    * kgraft-patch-4_12_14-122_162-default-4-2.1
    * kgraft-patch-4_12_14-122_165-default-3-2.1
    * kgraft-patch-4_12_14-122_136-default-11-2.2
    * kgraft-patch-4_12_14-122_159-default-5-2.1
    * kgraft-patch-4_12_14-122_156-default-6-2.1
    * kgraft-patch-4_12_14-122_139-default-10-2.2
    * kgraft-patch-4_12_14-122_150-default-8-2.2
    * kgraft-patch-4_12_14-122_133-default-12-2.2
    * kgraft-patch-4_12_14-122_153-default-6-2.1
    * kgraft-patch-4_12_14-122_147-default-8-2.2
    * kgraft-patch-4_12_14-122_144-default-9-2.2

## 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://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=1215119

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