SUSE-SU-2023:2686-1

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SUSE-SU-2023:2686-1

Summary: Security update for the Linux Kernel (Live Patch 38 for SLE 12 SP5)

Details: This update for the Linux Kernel 4.12.14-122_144 fixes several issues. The following security issues were fixed: - CVE-2023-23455: Fixed a denial of service inside atm_tc_enqueue in net/sched/sch_atm.c because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results) (bsc#1207189). - CVE-2023-31436: Fixed an out-of-bounds write in qfq_change_class() because lmax can exceed QFQ_MIN_LMAX (bsc#1210989). - CVE-2023-1390: Fixed remote DoS vulnerability in tipc_link_xmit() (bsc#1210779). - CVE-2023-28466: Fixed race condition that could lead to use-after-free or NULL pointer dereference in do_tls_getsockopt in net/tls/tls_main.c (bsc#1210452).

References: https://www.suse.com/support/update/announcement/2023/suse-su-20232686-1/, https://bugzilla.suse.com/1207189, https://bugzilla.suse.com/1210452, https://bugzilla.suse.com/1210779, https://bugzilla.suse.com/1210989, https://www.suse.com/security/cve/CVE-2023-1390, https://www.suse.com/security/cve/CVE-2023-23455, https://www.suse.com/security/cve/CVE-2023-28466, https://www.suse.com/security/cve/CVE-2023-31436