# Security update for the Linux Kernel (Live Patch 6 for SLE 15 SP5)

Announcement ID: SUSE-SU-2023:4867-1  
Rating: important  
References:

  * bsc#1215097
  * bsc#1215519

  
Cross-References:

  * CVE-2023-2163
  * CVE-2023-3777

  
CVSS scores:

  * CVE-2023-2163 ( SUSE ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  * CVE-2023-2163 ( NVD ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
  * CVE-2023-3777 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-3777 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.4
  * openSUSE Leap 15.5
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise Live Patching 15-SP4
  * SUSE Linux Enterprise Live Patching 15-SP5
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Micro 6.0
  * SUSE Linux Enterprise Real Time 15 SP4
  * SUSE Linux Enterprise Real Time 15 SP5
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for the Linux Kernel 5.14.21-150500_55_31 fixes several issues.

The following security issues were fixed:

  * CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables
    component can be exploited to achieve local privilege escalation.
    (bsc#1215097)
  * CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to
    unsafe code paths being incorrectly marked as safe, resulting in arbitrary
    read/write in kernel memory, lateral privilege escalation, and container
    escape. (bsc#1215519)

## 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:

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2023-4867=1

  * SUSE Linux Enterprise Live Patching 15-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-4867=1

  * openSUSE Leap 15.5  
    zypper in -t patch SUSE-2023-4864=1

  * SUSE Linux Enterprise Live Patching 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4864=1

## Package List:

  * openSUSE Leap 15.4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_92-default-debuginfo-2-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_19-debugsource-2-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_92-default-2-150400.2.1
  * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_92-default-debuginfo-2-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_19-debugsource-2-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_92-default-2-150400.2.1
  * openSUSE Leap 15.5 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP5_Update_6-debugsource-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_31-default-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_31-default-debuginfo-2-150500.2.1
  * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    * kernel-livepatch-SLE15-SP5_Update_6-debugsource-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_31-default-2-150500.2.1
    * kernel-livepatch-5_14_21-150500_55_31-default-debuginfo-2-150500.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-2163.html
  * https://www.suse.com/security/cve/CVE-2023-3777.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1215097
  * https://bugzilla.suse.com/show_bug.cgi?id=1215519

SUSE: 2023:4867-1 important: the Linux Kernel (Live Patch 6 for SLE 15

December 14, 2023
* bsc#1215097 * bsc#1215519 Cross-References: * CVE-2023-2163

Summary

## This update for the Linux Kernel 5.14.21-150500_55_31 fixes several issues. The following security issues were fixed: * CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables component can be exploited to achieve local privilege escalation. (bsc#1215097) * CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape. (bsc#1215519) ## 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: * openSUSE Leap 15.4 zypper in -t patch SUSE-2023-4867=1 * SUSE Linux Enterprise Live Patching 15-SP4 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-4867=1 * openSUSE Leap 15.5 zypper in -t patch SUSE-2023-4864=1 * SUSE Linux Enterprise Live Patching 15-SP5 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4864=1 ## Package List: * openSUSE Leap 15.4 (ppc64le s390x x86_64) * kernel-livepatch-5_14_21-150400_24_92-default-debuginfo-2-150400.2.1 * kernel-livepatch-SLE15-SP4_Update_19-debugsource-2-150400.2.1 * kernel-livepatch-5_14_21-150400_24_92-default-2-150400.2.1 * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64) * kernel-livepatch-5_14_21-150400_24_92-default-debuginfo-2-150400.2.1 * kernel-livepatch-SLE15-SP4_Update_19-debugsource-2-150400.2.1 * kernel-livepatch-5_14_21-150400_24_92-default-2-150400.2.1 * openSUSE Leap 15.5 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP5_Update_6-debugsource-2-150500.2.1 * kernel-livepatch-5_14_21-150500_55_31-default-2-150500.2.1 * kernel-livepatch-5_14_21-150500_55_31-default-debuginfo-2-150500.2.1 * SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64) * kernel-livepatch-SLE15-SP5_Update_6-debugsource-2-150500.2.1 * kernel-livepatch-5_14_21-150500_55_31-default-2-150500.2.1 * kernel-livepatch-5_14_21-150500_55_31-default-debuginfo-2-150500.2.1

References

* bsc#1215097

* bsc#1215519

Cross-

* CVE-2023-2163

* CVE-2023-3777

CVSS scores:

* CVE-2023-2163 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

* CVE-2023-2163 ( NVD ): 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

* CVE-2023-3777 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-3777 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:

* openSUSE Leap 15.4

* openSUSE Leap 15.5

* SUSE Linux Enterprise High Performance Computing 15 SP4

* SUSE Linux Enterprise High Performance Computing 15 SP5

* SUSE Linux Enterprise Live Patching 15-SP4

* SUSE Linux Enterprise Live Patching 15-SP5

* SUSE Linux Enterprise Micro 5.3

* SUSE Linux Enterprise Micro 5.4

* SUSE Linux Enterprise Micro 5.5

* SUSE Linux Enterprise Micro 6.0

* SUSE Linux Enterprise Real Time 15 SP4

* SUSE Linux Enterprise Real Time 15 SP5

* SUSE Linux Enterprise Server 15 SP4

* SUSE Linux Enterprise Server 15 SP5

* SUSE Linux Enterprise Server for SAP Applications 15 SP4

* SUSE Linux Enterprise Server for SAP Applications 15 SP5

An update that solves two vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2023-2163.html

* https://www.suse.com/security/cve/CVE-2023-3777.html

* https://bugzilla.suse.com/show_bug.cgi?id=1215097

* https://bugzilla.suse.com/show_bug.cgi?id=1215519

Severity
Announcement ID: SUSE-SU-2023:4867-1
Rating: important

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