Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP5)

Announcement ID: SUSE-SU-2023:3924-1
Rating: important
References:
Cross-References:
CVSS scores:
  • 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-2023-4273 ( 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:
  • 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 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 three vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.14.21-150500_55_12 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-2023-4273: 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).

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-SP4
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-3924=1
  • openSUSE Leap 15.5
    zypper in -t patch SUSE-2023-3930=1
  • SUSE Linux Enterprise Live Patching 15-SP5
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-3930=1
  • openSUSE Leap 15.4
    zypper in -t patch SUSE-2023-3924=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    • kernel-livepatch-5_14_21-150400_24_74-default-debuginfo-3-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_74-default-3-150400.2.1
    • kernel-livepatch-SLE15-SP4_Update_15-debugsource-3-150400.2.1
  • openSUSE Leap 15.5 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP5_Update_2-debugsource-3-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_12-default-debuginfo-3-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_12-default-3-150500.2.1
  • SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64)
    • kernel-livepatch-SLE15-SP5_Update_2-debugsource-3-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_12-default-debuginfo-3-150500.2.1
    • kernel-livepatch-5_14_21-150500_55_12-default-3-150500.2.1
  • openSUSE Leap 15.4 (ppc64le s390x x86_64)
    • kernel-livepatch-5_14_21-150400_24_74-default-debuginfo-3-150400.2.1
    • kernel-livepatch-5_14_21-150400_24_74-default-3-150400.2.1
    • kernel-livepatch-SLE15-SP4_Update_15-debugsource-3-150400.2.1

References: