Security update for the Linux Kernel (Live Patch 43 for SLE 12 SP3) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2022:1003-1 Final 1 1 2022-03-29T10:29:10Z current 2022-03-29T10:29:10Z 2022-03-29T10:29:10Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 43 for SLE 12 SP3) This update for the Linux Kernel 4.4.180-94_156 fixes one issue. The following security issue was fixed: - CVE-2021-28688: Fixed an issue introduced by XSA-365 (bsc#1183646). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2022-1003,SUSE-SLE-SAP-12-SP3-2022-1003,SUSE-SLE-SERVER-12-SP3-2022-1003 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2022/suse-su-20221003-1/ Link for SUSE-SU-2022:1003-1 https://lists.suse.com/pipermail/sle-security-updates/2022-March/010555.html E-Mail link for SUSE-SU-2022:1003-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1182294 SUSE Bug 1182294 https://www.suse.com/security/cve/CVE-2021-28688/ SUSE CVE CVE-2021-28688 page SUSE Linux Enterprise Server 12 SP3-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP3 kgraft-patch-4_4_180-94_156-default-2-2.1 kgraft-patch-4_4_180-94_156-default-2-2.1 as a component of SUSE Linux Enterprise Server 12 SP3-LTSS kgraft-patch-4_4_180-94_156-default-2-2.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP3 The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11. CVE-2021-28688 SUSE Linux Enterprise Server 12 SP3-LTSS:kgraft-patch-4_4_180-94_156-default-2-2.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:kgraft-patch-4_4_180-94_156-default-2-2.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2022/suse-su-20221003-1/ https://www.suse.com/security/cve/CVE-2021-28688.html CVE-2021-28688 https://bugzilla.suse.com/1183646 SUSE Bug 1183646