Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP4)
Details
This update for the Linux Kernel 5.14.21-150400155 fixes several issues.
The following security issues were fixed:
CVE-2023-4147: Fixed use-after-free in nftablesnewrule (bsc#1215118).
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-2023-4004: Fixed improper element removal netfilter nftsetpipapo (bsc#1214812).
CVE-2023-3390: Fixed an use-after-free vulnerability in the netfilter subsystem in net/netfilter/nftablesapi.c that could allow a local attacker with user access to cause a privilege escalation issue (bsc#1212934).