Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

Announcement ID: SUSE-SU-2021:3738-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2021-34866 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-34866 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-34866 ( NVD ): 8.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • CVE-2021-3752 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-3752 ( NVD ): 7.1 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-41864 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-41864 ( 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 15.3
  • SUSE Linux Enterprise High Performance Computing 15 SP3
  • SUSE Linux Enterprise Live Patching 15-SP3
  • SUSE Linux Enterprise Micro 5.1
  • SUSE Linux Enterprise Micro 5.2
  • SUSE Linux Enterprise Server 15 SP3
  • SUSE Linux Enterprise Server for SAP Applications 15 SP3

An update that solves three vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.3.18-57 fixes several issues.

The following security issues were fixed:

  • CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432).
  • CVE-2021-34866: Fixed possible eBPF Type Confusion privilege escalation vulnerability via eBPF type confusion (bsc#1191646).
  • CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

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 15.3
    zypper in -t patch SUSE-2021-3738=1
  • SUSE Linux Enterprise Live Patching 15-SP3
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-3738=1

Package List:

  • openSUSE Leap 15.3 (ppc64le s390x x86_64)
    • kernel-livepatch-5_3_18-57-default-debuginfo-8-3.2
    • kernel-livepatch-5_3_18-57-default-8-3.2
    • kernel-livepatch-SLE15-SP3_Update_0-debugsource-8-3.2
  • openSUSE Leap 15.3 (x86_64)
    • kernel-livepatch-5_3_18-57-preempt-debuginfo-8-3.2
    • kernel-livepatch-5_3_18-57-preempt-8-3.2
  • SUSE Linux Enterprise Live Patching 15-SP3 (ppc64le s390x x86_64)
    • kernel-livepatch-5_3_18-57-default-debuginfo-8-3.2
    • kernel-livepatch-5_3_18-57-default-8-3.2
    • kernel-livepatch-SLE15-SP3_Update_0-debugsource-8-3.2

References: