Security update for the Linux Kernel (Live Patch 16 for SLE 15 SP2)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 16 for SLE 15 SP2)
Announcement ID: SUSE-SU-2021:2487-1
Rating: important
References: #1188117 #1188257
Cross-References:CVE-2021-22555 CVE-2021-33909
Affected Products:
  • SUSE Linux Enterprise Module for Live Patching 15-SP3
  • SUSE Linux Enterprise Module for Live Patching 15-SP2

An update that fixes two vulnerabilities is now available.

Description:

This update for the Linux Kernel 5.3.18-24_70 fixes several issues.
The following security issues were fixed:

  • CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to andobtain full root privileges. (bsc#1188062)
  • CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116)

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-SP3-2021-2484=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-2485=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-2486=1
  • SUSE Linux Enterprise Module for Live Patching 15-SP2:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-2487=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x x86_64):
    • kernel-livepatch-5_3_18-57-default-4-3.1
    • kernel-livepatch-5_3_18-57-default-debuginfo-4-3.1
    • kernel-livepatch-5_3_18-59_13-default-2-2.1
    • kernel-livepatch-5_3_18-59_13-default-debuginfo-2-2.1
    • kernel-livepatch-5_3_18-59_5-default-2-2.1
    • kernel-livepatch-5_3_18-59_5-default-debuginfo-2-2.1
    • kernel-livepatch-SLE15-SP3_Update_0-debugsource-4-3.1
    • kernel-livepatch-SLE15-SP3_Update_1-debugsource-2-2.1
    • kernel-livepatch-SLE15-SP3_Update_3-debugsource-2-2.1
  • SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x x86_64):
    • kernel-livepatch-5_3_18-24_70-default-2-2.1
    • kernel-livepatch-5_3_18-24_70-default-debuginfo-2-2.1
    • kernel-livepatch-SLE15-SP2_Update_16-debugsource-2-2.1

References: