Security update for the Linux Kernel (Live Patch 42 for SLE 12 SP3) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2022:0668-1 Final 1 1 2022-03-02T10:12:11Z current 2022-03-02T10:12:11Z 2022-03-02T10:12:11Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 42 for SLE 12 SP3) This update for the Linux Kernel 4.4.180-94_153 fixes several issues. The following security issues were fixed: - CVE-2021-0920: Fixed a local privilege escalation due to an use after free bug in unix_gc (bsc#1194463). - CVE-2021-28688: Fixed XSA-365 that 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 (bsc#1182294). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2022-668,SUSE-SLE-SAP-12-SP3-2022-668,SUSE-SLE-SERVER-12-SP3-2022-668 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-20220668-1/ Link for SUSE-SU-2022:0668-1 https://lists.suse.com/pipermail/sle-security-updates/2022-March/010328.html E-Mail link for SUSE-SU-2022:0668-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1182294 SUSE Bug 1182294 https://bugzilla.suse.com/1194463 SUSE Bug 1194463 https://www.suse.com/security/cve/CVE-2021-0920/ SUSE CVE CVE-2021-0920 page 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_153-default-2-2.1 kgraft-patch-4_4_180-94_153-default-2-2.1 as a component of SUSE Linux Enterprise Server 12 SP3-LTSS kgraft-patch-4_4_180-94_153-default-2-2.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP3 In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel CVE-2021-0920 SUSE Linux Enterprise Server 12 SP3-LTSS:kgraft-patch-4_4_180-94_153-default-2-2.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:kgraft-patch-4_4_180-94_153-default-2-2.1 important 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-20220668-1/ https://www.suse.com/security/cve/CVE-2021-0920.html CVE-2021-0920 https://bugzilla.suse.com/1193731 SUSE Bug 1193731 https://bugzilla.suse.com/1194463 SUSE Bug 1194463 https://bugzilla.suse.com/1195939 SUSE Bug 1195939 https://bugzilla.suse.com/1199255 SUSE Bug 1199255 https://bugzilla.suse.com/1200084 SUSE Bug 1200084 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_153-default-2-2.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:kgraft-patch-4_4_180-94_153-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-20220668-1/ https://www.suse.com/security/cve/CVE-2021-28688.html CVE-2021-28688 https://bugzilla.suse.com/1183646 SUSE Bug 1183646