Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP3)
Announcement ID: SUSE-SU-2021:3718-1
Rating: important
References: #1191318 #1191646
Cross-References:CVE-2021-34866 CVE-2021-41864
Affected Products:
  • SUSE Linux Enterprise Module for Live Patching 15-SP3

An update that fixes two vulnerabilities is now available.

Description:

This update for the Linux Kernel 5.3.18-59_13 fixes several issues.
The following security issues were fixed:

  • 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 Security 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 Module for Live Patching 15-SP3:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-3718=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-3719=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x x86_64):
    • kernel-livepatch-5_3_18-59_13-default-6-2.2
    • kernel-livepatch-5_3_18-59_13-default-debuginfo-6-2.2
    • kernel-livepatch-5_3_18-59_24-default-2-2.2
    • kernel-livepatch-5_3_18-59_24-default-debuginfo-2-2.2
    • kernel-livepatch-SLE15-SP3_Update_3-debugsource-6-2.2
    • kernel-livepatch-SLE15-SP3_Update_6-debugsource-2-2.2

References: