Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP3)

Announcement ID:	SUSE-SU-2021:3739-1
Rating:	important
References:	bsc#1191318 bsc#1191646
Cross-References:	CVE-2021-34866 CVE-2021-41864
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-2021-41864 ( 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 two vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.3.18-59_5 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 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-2021-3718=1 SUSE-2021-3741=1 SUSE-2021-3742=1 SUSE-2021-3719=1 SUSE-2021-3739=1 SUSE-2021-3740=1
• SUSE Linux Enterprise Live Patching 15-SP3
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-3718=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-3741=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-3742=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-3719=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-3739=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-3740=1

Package List:

• openSUSE Leap 15.3 (ppc64le s390x x86_64)
  • kernel-livepatch-5_3_18-59_13-default-6-2.2
  • kernel-livepatch-SLE15-SP3_Update_3-debugsource-6-2.2
  • kernel-livepatch-5_3_18-59_16-default-debuginfo-5-2.2
  • kernel-livepatch-SLE15-SP3_Update_4-debugsource-5-2.2
  • kernel-livepatch-5_3_18-59_5-default-6-2.2
  • kernel-livepatch-SLE15-SP3_Update_1-debugsource-6-2.2
  • kernel-livepatch-5_3_18-59_16-default-5-2.2
  • kernel-livepatch-SLE15-SP3_Update_5-debugsource-4-2.2
  • kernel-livepatch-5_3_18-59_5-default-debuginfo-6-2.2
  • kernel-livepatch-5_3_18-59_19-default-debuginfo-4-2.2
  • kernel-livepatch-5_3_18-59_10-default-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_6-debugsource-2-2.2
  • kernel-livepatch-5_3_18-59_19-default-4-2.2
  • kernel-livepatch-5_3_18-59_13-default-debuginfo-6-2.2
  • kernel-livepatch-SLE15-SP3_Update_2-debugsource-6-2.2
  • kernel-livepatch-5_3_18-59_10-default-debuginfo-6-2.2
• openSUSE Leap 15.3 (x86_64)
  • kernel-livepatch-5_3_18-59_16-preempt-5-2.2
  • kernel-livepatch-5_3_18-59_19-preempt-debuginfo-4-2.2
  • kernel-livepatch-5_3_18-59_24-preempt-debuginfo-2-2.2
  • kernel-livepatch-5_3_18-59_13-preempt-6-2.2
  • kernel-livepatch-5_3_18-59_5-preempt-debuginfo-6-2.2
  • kernel-livepatch-5_3_18-59_24-preempt-2-2.2
  • kernel-livepatch-5_3_18-59_19-preempt-4-2.2
  • kernel-livepatch-5_3_18-59_5-preempt-6-2.2
  • kernel-livepatch-5_3_18-59_13-preempt-debuginfo-6-2.2
  • kernel-livepatch-5_3_18-59_10-preempt-debuginfo-6-2.2
  • kernel-livepatch-5_3_18-59_16-preempt-debuginfo-5-2.2
  • kernel-livepatch-5_3_18-59_10-preempt-6-2.2
• SUSE Linux Enterprise Live Patching 15-SP3 (ppc64le s390x x86_64)
  • kernel-livepatch-5_3_18-59_13-default-6-2.2
  • kernel-livepatch-SLE15-SP3_Update_3-debugsource-6-2.2
  • kernel-livepatch-5_3_18-59_16-default-debuginfo-5-2.2
  • kernel-livepatch-SLE15-SP3_Update_4-debugsource-5-2.2
  • kernel-livepatch-5_3_18-59_5-default-6-2.2
  • kernel-livepatch-SLE15-SP3_Update_1-debugsource-6-2.2
  • kernel-livepatch-5_3_18-59_16-default-5-2.2
  • kernel-livepatch-SLE15-SP3_Update_5-debugsource-4-2.2
  • kernel-livepatch-5_3_18-59_5-default-debuginfo-6-2.2
  • kernel-livepatch-5_3_18-59_19-default-debuginfo-4-2.2
  • kernel-livepatch-5_3_18-59_10-default-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_6-debugsource-2-2.2
  • kernel-livepatch-5_3_18-59_19-default-4-2.2
  • kernel-livepatch-5_3_18-59_13-default-debuginfo-6-2.2
  • kernel-livepatch-SLE15-SP3_Update_2-debugsource-6-2.2
  • kernel-livepatch-5_3_18-59_10-default-debuginfo-6-2.2

References:

• https://www.suse.com/security/cve/CVE-2021-34866.html
• https://www.suse.com/security/cve/CVE-2021-41864.html
• https://bugzilla.suse.com/show_bug.cgi?id=1191318
• https://bugzilla.suse.com/show_bug.cgi?id=1191646