SUSE-SU-2022:2407-1

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SUSE-SU-2022:2407-1

Summary: Security update for the Linux Kernel

Details: The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2022-29900, CVE-2022-29901: Fixed the RETBLEED attack, a new Spectre like Branch Target Buffer attack, that can leak arbitrary kernel information (bsc#1199657). - CVE-2022-1679: Fixed a use-after-free in the Atheros wireless driver in the way a user forces the ath9k_htc_wait_for_target function to fail with some input messages (bsc#1199487). - CVE-2022-20132: Fixed out of bounds read due to improper input validation in lg_probe and related functions of hid-lg.c (bsc#1200619). - CVE-2022-33981: Fixed use-after-free in floppy driver (bsc#1200692) - CVE-2022-20141: Fixed a possible use after free due to improper locking in ip_check_mc_rcu() (bsc#1200604). - CVE-2021-4157: Fixed an out of memory bounds write flaw in the NFS subsystem, related to the replication of files with NFS. A user could potentially crash the system or escalate privileges on the system (bsc#1194013). - CVE-2022-20154: Fixed a use after free due to a race condition in lock_sock_nested of sock.c. This could lead to local escalation of privilege with System execution privileges needed (bsc#1200599). - CVE-2022-2318: Fixed a use-after-free vulnerabilities in the timer handler in net/rose/rose_timer.c that allow attackers to crash the system without any privileges (bsc#1201251). - CVE-2022-26365, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742: Fixed multiple potential data leaks with Block and Network devices when using untrusted backends (bsc#1200762). - CVE-2021-26341: Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage (bsc#1201050). - CVE-2020-26541: Enforce the secure boot forbidden signature database (aka dbx) protection mechanism. (bsc#1177282) The following non-security bugs were fixed: - exec: Force single empty string when argv is empty (bsc#1200571).

References: https://www.suse.com/support/update/announcement/2022/suse-su-20222407-1/, https://bugzilla.suse.com/1177282, https://bugzilla.suse.com/1194013, https://bugzilla.suse.com/1196901, https://bugzilla.suse.com/1199487, https://bugzilla.suse.com/1199657, https://bugzilla.suse.com/1200571, https://bugzilla.suse.com/1200599, https://bugzilla.suse.com/1200604, https://bugzilla.suse.com/1200605, https://bugzilla.suse.com/1200608, https://bugzilla.suse.com/1200619, https://bugzilla.suse.com/1200692, https://bugzilla.suse.com/1200762, https://bugzilla.suse.com/1201050, https://bugzilla.suse.com/1201080, https://bugzilla.suse.com/1201251, https://www.suse.com/security/cve/CVE-2020-26541, https://www.suse.com/security/cve/CVE-2021-26341, https://www.suse.com/security/cve/CVE-2021-4157, https://www.suse.com/security/cve/CVE-2022-1679, https://www.suse.com/security/cve/CVE-2022-20132, https://www.suse.com/security/cve/CVE-2022-20141, https://www.suse.com/security/cve/CVE-2022-20154, https://www.suse.com/security/cve/CVE-2022-2318, https://www.suse.com/security/cve/CVE-2022-26365, https://www.suse.com/security/cve/CVE-2022-29900, https://www.suse.com/security/cve/CVE-2022-29901, https://www.suse.com/security/cve/CVE-2022-33740, https://www.suse.com/security/cve/CVE-2022-33741, https://www.suse.com/security/cve/CVE-2022-33742, https://www.suse.com/security/cve/CVE-2022-33981