{"id":"ALSA-2023:5091","summary":"Important: kernel-rt security and bug fix update","details":"The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)\n* kernel: netfilter: nf_tables: fix chain binding transaction logic in the abort path of NFT_MSG_NEWRULE (CVE-2023-3610)\n* kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)\n* kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)\n* kernel: netfilter: nf_tables_newrule when adding a rule with NFTA_RULE_CHAIN_ID leads to use-after-free (CVE-2023-4147)\n* kernel: nf_tables: use-after-free in nft_chain_lookup_byid() (CVE-2023-31248)\n* kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)\n* kernel: save/restore speculative MSRs during S3 suspend/resume (CVE-2023-1637)\n* hw: amd: Cross-Process Information Leak (CVE-2023-20593)\n* kernel: bypass of shadow stack protection due to a logic error (CVE-2023-21102)\n\nFor 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.\n\nBug Fix(es):\n\n* kernel-rt: update RT source tree to the latest AlmaLinux-9.2.z3 Batch (BZ#2228482)","modified":"2026-02-04T03:32:38.691507Z","published":"2023-09-12T00:00:00Z","related":["CVE-2023-1637","CVE-2023-20593","CVE-2023-21102","CVE-2023-31248","CVE-2023-3390","CVE-2023-35001","CVE-2023-3610","CVE-2023-3776","CVE-2023-4004","CVE-2023-4147"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:5091"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-1637"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-20593"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-21102"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-31248"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-3390"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-35001"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-3610"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-3776"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-4004"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-4147"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2181891"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2213260"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2213455"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2217845"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2220892"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2220893"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2225097"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2225198"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2225239"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2225275"},{"type":"ADVISORY","url":"https://errata.almalinux.org/9/ALSA-2023-5091.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug-core","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug-devel","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug-kvm","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug-kvm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug-modules","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug-modules-core","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux9/ALSA-2023:5091.json"}},{"package":{"name":"kernel-rt-debug-modules-extra","ecosystem":"AlmaLinux:9","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.0-284.30.1.rt14.315.el9_2"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinu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