Security update for the Linux Kernel (Live Patch 39 for SLE 15 SP2) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2023:3891-1 Final 1 1 2023-09-29T05:04:08Z current 2023-09-29T05:04:08Z 2023-09-29T05:04:08Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 39 for SLE 15 SP2) This update for the Linux Kernel 5.3.18-150200_24_160 fixes several issues. The following security issues were fixed: - CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210619). - CVE-2023-4273: Fixed a flaw in the exFAT driver of the Linux kernel that alloawed a local privileged attacker to overflow the kernel stack (bsc#1214123). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2023-3891,SUSE-SLE-Module-Live-Patching-15-SP2-2023-3891 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2023/suse-su-20233891-1/ Link for SUSE-SU-2023:3891-1 https://lists.suse.com/pipermail/sle-security-updates/2023-September/016444.html E-Mail link for SUSE-SU-2023:3891-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1210619 SUSE Bug 1210619 https://bugzilla.suse.com/1214123 SUSE Bug 1214123 https://www.suse.com/security/cve/CVE-2023-1829/ SUSE CVE CVE-2023-1829 page https://www.suse.com/security/cve/CVE-2023-4273/ SUSE CVE CVE-2023-4273 page SUSE Linux Enterprise Live Patching 15 SP2 kernel-livepatch-5_3_18-150200_24_160-default-2-150200.2.1 kernel-livepatch-5_3_18-150200_24_160-preempt-2-150200.2.1 kernel-livepatch-5_3_18-150200_24_160-default-2-150200.2.1 as a component of SUSE Linux Enterprise Live Patching 15 SP2 A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28. CVE-2023-1829 SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-150200_24_160-default-2-150200.2.1 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/2023/suse-su-20233891-1/ https://www.suse.com/security/cve/CVE-2023-1829.html CVE-2023-1829 https://bugzilla.suse.com/1210335 SUSE Bug 1210335 https://bugzilla.suse.com/1210619 SUSE Bug 1210619 A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack. CVE-2023-4273 SUSE Linux Enterprise Live Patching 15 SP2:kernel-livepatch-5_3_18-150200_24_160-default-2-150200.2.1 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/2023/suse-su-20233891-1/ https://www.suse.com/security/cve/CVE-2023-4273.html CVE-2023-4273 https://bugzilla.suse.com/1214120 SUSE Bug 1214120 https://bugzilla.suse.com/1214123 SUSE Bug 1214123