Security update for the Linux Kernel (Live Patch 17 for SLE 15 SP2) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2021:2695-1 Final 1 1 2021-08-17T09:56:24Z current 2021-08-17T09:56:24Z 2021-08-17T09:56:24Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 17 for SLE 15 SP2) This update for the Linux Kernel 5.3.18-24_75 fixes several issues. The following security issues were fixed: - CVE-2021-22543: Fixed an issue with KVM, related to the handling of VM_IO|VM_PFNMAP vmas, which allowed users with the ability to start and control a VM to read/write random pages of memory and could result in local privilege escalation (bsc#1186482). - CVE-2021-37576: On the powerpc platform KVM guest OS users could cause host OS memory corruption via rtas_args.nargs (bsc#1188838). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2021-2695,SUSE-SLE-Live-Patching-12-SP4-2021-2749,SUSE-SLE-Live-Patching-12-SP5-2021-2735,SUSE-SLE-Module-Live-Patching-15-2021-2726,SUSE-SLE-Module-Live-Patching-15-SP1-2021-2706,SUSE-SLE-Module-Live-Patching-15-SP2-2021-2695 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2021/suse-su-20212695-1/ Link for SUSE-SU-2021:2695-1 https://lists.suse.com/pipermail/sle-security-updates/2021-August/009296.html E-Mail link for SUSE-SU-2021:2695-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1186483 SUSE Bug 1186483 https://bugzilla.suse.com/1188842 SUSE Bug 1188842 https://www.suse.com/security/cve/CVE-2021-22543/ SUSE CVE CVE-2021-22543 page https://www.suse.com/security/cve/CVE-2021-37576/ SUSE CVE CVE-2021-37576 page SUSE Linux Enterprise Live Patching 12 SP4 SUSE Linux Enterprise Live Patching 12 SP5 SUSE Linux Enterprise Live Patching 15 SUSE Linux Enterprise Live Patching 15 SP1 SUSE Linux Enterprise Live Patching 15 SP2 kernel-livepatch-5_3_18-24_75-default-2-2.1 kernel-livepatch-5_3_18-24_75-preempt-2-2.1 kgraft-patch-4_12_14-95_80-default-2-2.1 kgraft-patch-4_12_14-122_80-default-2-2.1 kernel-livepatch-4_12_14-150_75-default-2-2.1 kernel-livepatch-4_12_14-197_99-default-2-2.1 kgraft-patch-4_12_14-95_80-default-2-2.1 as a component of SUSE Linux Enterprise Live Patching 12 SP4 kgraft-patch-4_12_14-122_80-default-2-2.1 as a component of SUSE Linux Enterprise Live Patching 12 SP5 kernel-livepatch-4_12_14-150_75-default-2-2.1 as a component of SUSE Linux Enterprise Live Patching 15 kernel-livepatch-4_12_14-197_99-default-2-2.1 as a component of SUSE Linux Enterprise Live Patching 15 SP1 kernel-livepatch-5_3_18-24_75-default-2-2.1 as a component of SUSE Linux Enterprise Live Patching 15 SP2 An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation. CVE-2021-22543 SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_80-default-2-2.1 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_80-default-2-2.1 SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_99-default-2-2.1 SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_75-default-2-2.1 SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_75-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/2021/suse-su-20212695-1/ https://www.suse.com/security/cve/CVE-2021-22543.html CVE-2021-22543 https://bugzilla.suse.com/1186482 SUSE Bug 1186482 https://bugzilla.suse.com/1186483 SUSE Bug 1186483 https://bugzilla.suse.com/1190276 SUSE Bug 1190276 https://bugzilla.suse.com/1197660 SUSE Bug 1197660 arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. CVE-2021-37576 SUSE Linux Enterprise Live Patching 12 SP4:kgraft-patch-4_12_14-95_80-default-2-2.1 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_80-default-2-2.1 SUSE Linux Enterprise Live Patching 15 SP1:kernel-livepatch-4_12_14-197_99-default-2-2.1 SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-24_75-default-2-2.1 SUSE Linux Enterprise Live Patching 15:kernel-livepatch-4_12_14-150_75-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/2021/suse-su-20212695-1/ https://www.suse.com/security/cve/CVE-2021-37576.html CVE-2021-37576 https://bugzilla.suse.com/1188838 SUSE Bug 1188838 https://bugzilla.suse.com/1188842 SUSE Bug 1188842 https://bugzilla.suse.com/1190276 SUSE Bug 1190276