SUSE-SU-2021:2020-1

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SUSE-SU-2021:2020-1

Summary: Security update for the Linux Kernel (Live Patch 24 for SLE 15 SP1)

Details: This update for the Linux Kernel 4.12.14-197_89 fixes several issues. The following issues were fixed: - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484). - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values (bsc#1186111). - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed local attackers to elevate their privileges (bnc#1186060). - CVE-2021-32399: Fixed a race condition when removing the HCI controller (bnc#1184611). - Fixed a data loss/data corruption that occurs if there is a write error on an md/raid array (bsc#1185680).

References: https://www.suse.com/support/update/announcement/2021/suse-su-20212020-1/, https://bugzilla.suse.com/1185847, https://bugzilla.suse.com/1185899, https://bugzilla.suse.com/1186061, https://bugzilla.suse.com/1186285, https://bugzilla.suse.com/1186498, https://www.suse.com/security/cve/CVE-2021-23134, https://www.suse.com/security/cve/CVE-2021-32399, https://www.suse.com/security/cve/CVE-2021-33034, https://www.suse.com/security/cve/CVE-2021-33200