SUSE-SU-2023:4239-1

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SUSE-SU-2023:4239-1

Summary: Security update for the Linux Kernel (Live Patch 34 for SLE 15 SP3)

Details: This update for the Linux Kernel 5.3.18-150300_59_127 fixes several issues. The following security issues were fixed: - CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215440). - CVE-2023-4147: Fixed use-after-free in nf_tables_newrule (bsc#1215118). - CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1214812). - CVE-2023-3390: Fixed an use-after-free vulnerability in the netfilter subsystem in net/netfilter/nf_tables_api.c that could allow a local attacker with user access to cause a privilege escalation issue (bsc#1212934).

References: https://www.suse.com/support/update/announcement/2023/suse-su-20234239-1/, https://bugzilla.suse.com/1212934, https://bugzilla.suse.com/1214812, https://bugzilla.suse.com/1215118, https://bugzilla.suse.com/1215440, https://www.suse.com/security/cve/CVE-2023-3390, https://www.suse.com/security/cve/CVE-2023-4004, https://www.suse.com/security/cve/CVE-2023-4147, https://www.suse.com/security/cve/CVE-2023-4623