SUSE-SU-2023:3928-1

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SUSE-SU-2023:3928-1

Summary: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5)

Details: This update for the Linux Kernel 5.14.21-150500_53 fixes several issues. The following security issues were fixed: - CVE-2023-3776: Fixed improper refcount update in cls_fw leads to use-after-free (bsc#1215119). - 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). - CVE-2023-3609: Fixed reference counter leak leading to overflow in net/sched (bsc#1213587). - 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). - CVE-2023-31248: Fixed an use-after-free vulnerability in nft_chain_lookup_byid that could allow a local attacker to escalate their privilege (bsc#1213064).

References: https://www.suse.com/support/update/announcement/2023/suse-su-20233928-1/, https://bugzilla.suse.com/1210619, https://bugzilla.suse.com/1213064, https://bugzilla.suse.com/1213587, https://bugzilla.suse.com/1213706, https://bugzilla.suse.com/1214123, https://bugzilla.suse.com/1215119, https://www.suse.com/security/cve/CVE-2023-1829, https://www.suse.com/security/cve/CVE-2023-31248, https://www.suse.com/security/cve/CVE-2023-3609, https://www.suse.com/security/cve/CVE-2023-3776, https://www.suse.com/security/cve/CVE-2023-3812, https://www.suse.com/security/cve/CVE-2023-4273