SUSE: 2021:4038-1 important: the Linux Kernel (Live Patch 23 for SLE 15 SP1)
Summary
This update for the Linux Kernel 4.12.14-197_86 fixes several issues. The following security issues were fixed: - CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045). - CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790) 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-SP1: zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-4040=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4041=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4042=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4043=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4044=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4045=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4046=1 - SUSE Linux Enterprise Module for Live Patching 15: zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2021-4047=1 SUSE-SLE-Module-Live-Patching-15-2021-4048=1 SUSE-SLE-Module-Live-Patching-15-2021-4049=1 SUSE-SLE-Module-Live-Patching-15-2021-4050=1 - SUSE Linux Enterprise Live Patching 12-SP5: zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-4022=1 SUSE-SLE-Live-Patching-12-SP5-2021-4023=1 SUSE-SLE-Live-Patching-12-SP5-2021-4024=1 SUSE-SLE-Live-Patching-12-SP5-2021-4025=1 SUSE-SLE-Live-Patching-12-SP5-2021-4026=1 SUSE-SLE-Live-Patching-12-SP5-2021-4027=1 SUSE-SLE-Live-Patching-12-SP5-2021-4028=1 SUSE-SLE-Live-Patching-12-SP5-2021-4029=1 SUSE-SLE-Live-Patching-12-SP5-2021-4030=1 SUSE-SLE-Live-Patching-12-SP5-2021-4031=1 SUSE-SLE-Live-Patching-12-SP5-2021-4032=1 SUSE-SLE-Live-Patching-12-SP5-2021-4033=1 - SUSE Linux Enterprise Live Patching 12-SP4: zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2021-4034=1 SUSE-SLE-Live-Patching-12-SP4-2021-4035=1 SUSE-SLE-Live-Patching-12-SP4-2021-4036=1 SUSE-SLE-Live-Patching-12-SP4-2021-4037=1 SUSE-SLE-Live-Patching-12-SP4-2021-4038=1 Package List: - SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64): kernel-livepatch-4_12_14-197_75-default-14-2.2 kernel-livepatch-4_12_14-197_78-default-14-2.2 kernel-livepatch-4_12_14-197_83-default-13-2.2 kernel-livepatch-4_12_14-197_86-default-12-2.2 kernel-livepatch-4_12_14-197_89-default-9-2.1 kernel-livepatch-4_12_14-197_92-default-8-2.1 kernel-livepatch-4_12_14-197_99-default-6-2.1 - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64): kernel-livepatch-4_12_14-150_66-default-13-2.2 kernel-livepatch-4_12_14-150_66-default-debuginfo-13-2.2 kernel-livepatch-4_12_14-150_69-default-12-2.2 kernel-livepatch-4_12_14-150_69-default-debuginfo-12-2.2 kernel-livepatch-4_12_14-150_72-default-9-2.1 kernel-livepatch-4_12_14-150_72-default-debuginfo-9-2.1 kernel-livepatch-4_12_14-150_75-default-6-2.1 kernel-livepatch-4_12_14-150_75-default-debuginfo-6-2.1 - SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64): kgraft-patch-4_12_14-122_54-default-14-2.2 kgraft-patch-4_12_14-122_57-default-14-2.2 kgraft-patch-4_12_14-122_60-default-13-2.2 kgraft-patch-4_12_14-122_63-default-12-2.2 kgraft-patch-4_12_14-122_66-default-10-2.1 kgraft-patch-4_12_14-122_71-default-9-2.1 kgraft-patch-4_12_14-122_74-default-7-2.1 kgraft-patch-4_12_14-122_77-default-7-2.1 kgraft-patch-4_12_14-122_80-default-6-2.1 kgraft-patch-4_12_14-122_83-default-5-2.1 kgraft-patch-4_12_14-122_88-default-3-2.1 kgraft-patch-4_12_14-122_91-default-3-2.1 - SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le s390x x86_64): kgraft-patch-4_12_14-95_68-default-13-2.2 kgraft-patch-4_12_14-95_71-default-12-2.2 kgraft-patch-4_12_14-95_74-default-9-2.1 kgraft-patch-4_12_14-95_77-default-8-2.1 kgraft-patch-4_12_14-95_80-default-6-2.1
References
#1191813 #1192048
Cross- CVE-2021-0941 CVE-2021-20322
CVSS scores:
CVE-2021-0941 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE-2021-20322 (SUSE): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected Products:
SUSE Linux Enterprise Module for Live Patching 15-SP1
SUSE Linux Enterprise Module for Live Patching 15
SUSE Linux Enterprise Live Patching 12-SP5
SUSE Linux Enterprise Live Patching 12-SP4
https://www.suse.com/security/cve/CVE-2021-0941.html
https://www.suse.com/security/cve/CVE-2021-20322.html
https://bugzilla.suse.com/1191813
https://bugzilla.suse.com/1192048