RLSA-2023:5091

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: UAF in nftables when nftsetlookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

• kernel: netfilter: nftables: fix chain binding transaction logic in the abort path of NFTMSG_NEWRULE (CVE-2023-3610)

• kernel: net/sched: clsfw component can be exploited as result of failure in tcfchange_indev function (CVE-2023-3776)

• kernel: netfilter: use-after-free due to improper element removal in nftpipaporemove() (CVE-2023-4004)

• kernel: netfilter: nftablesnewrule when adding a rule with NFTARULECHAIN_ID leads to use-after-free (CVE-2023-4147)

• kernel: nftables: use-after-free in nftchainlookupbyid() (CVE-2023-31248)

• kernel: nftables: stack-out-of-bounds-read in nftbyteorder_eval() (CVE-2023-35001)

• kernel: save/restore speculative MSRs during S3 suspend/resume (CVE-2023-1637)

• hw: amd: Cross-Process Information Leak (CVE-2023-20593)

• kernel: bypass of shadow stack protection due to a logic error (CVE-2023-21102)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

• kernel-rt: update RT source tree to the latest Rocky Linux-9.2.z3 Batch (BZ#2228482)