Security update for the Linux Kernel (Live Patch 47 for SLE 12 SP5) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2023:3748-1 Final 1 1 2023-09-25T06:04:51Z current 2023-09-25T06:04:51Z 2023-09-25T06:04:51Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 47 for SLE 12 SP5) This update for the Linux Kernel 4.12.14-122_173 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-2023-3812: Fixed an out-of-bounds memory access flaw in the TUN/TAP device driver functionality that could allow a local user to crash or potentially escalate their privileges on the system (bsc#1213706). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2023-3748,SUSE-SLE-Live-Patching-12-SP5-2023-3748 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-20233748-1/ Link for SUSE-SU-2023:3748-1 https://lists.suse.com/pipermail/sle-security-updates/2023-September/016315.html E-Mail link for SUSE-SU-2023:3748-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1210619 SUSE Bug 1210619 https://bugzilla.suse.com/1213706 SUSE Bug 1213706 https://www.suse.com/security/cve/CVE-2023-1829/ SUSE CVE CVE-2023-1829 page https://www.suse.com/security/cve/CVE-2023-3812/ SUSE CVE CVE-2023-3812 page SUSE Linux Enterprise Live Patching 12 SP5 kgraft-patch-4_12_14-122_173-default-2-2.1 kgraft-patch-4_12_14-122_173-default-2-2.1 as a component of SUSE Linux Enterprise Live Patching 12 SP5 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 12 SP5:kgraft-patch-4_12_14-122_173-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/2023/suse-su-20233748-1/ 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 An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system. CVE-2023-3812 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_173-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/2023/suse-su-20233748-1/ https://www.suse.com/security/cve/CVE-2023-3812.html CVE-2023-3812 https://bugzilla.suse.com/1213543 SUSE Bug 1213543 https://bugzilla.suse.com/1213706 SUSE Bug 1213706