{"id":"ALSA-2026:85774","summary":"Important: kernel-rt security, bug fix, and enhancement 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: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)\n  * kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196)\n  * kernel: sctp: keep chunk-\u003etransport in step with the list it is queued on (CVE-2026-74588)\n  * kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)\n  * kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)\n  * kernel: sctp: stop processing a packet once its association is deleted (CVE-2026-89479)\n  * kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)\n  * kernel: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state (CVE-2026-93288)\n  * kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()\n  * kernel: netfilter: flowtable: hold reference on ct until flow is released (CVE-2026-98320)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * gfs2 filesystem withdrawal rework [AlmaLinux-8] (JIRA:AlmaLinux-129363)\n  * Batch: z-stream xfrm - almalinux-8.10.z (NST-Core-26W38) (JIRA:AlmaLinux-256684)\n\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","modified":"2026-10-20T16:11:57.367839353Z","published":"2026-10-20T00:00:00Z","related":["CVE-2026-52935","CVE-2026-53196","CVE-2026-74588","CVE-2026-74752","CVE-2026-89479","CVE-2026-89631","CVE-2026-93288","CVE-2026-93817","CVE-2026-98320"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:85774"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-52935"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53196"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-74588"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-74752"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-89479"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-89631"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-93288"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-93817"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-98320"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492098"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492750"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2521384"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2524422"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2532089"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2532290"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2540391"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2540500"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2540872"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2546494"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-85774.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-debug-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-debug-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-debug-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-debug-modules-extra","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}},{"package":{"name":"kernel-rt-modules-extra","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules-extra"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.176.1.rt7.517.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:85774.json"}}],"schema_version":"1.9.0"}