{"id":"ALSA-2026:59737","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: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924)\n  * kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)\n  * kernel: netfilter: conntrack: tcp: do not force CLOSE on invalid-seq RST without direction check (CVE-2026-63913)\n  * kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)\n  * kernel: netfilter: ipset: fix race between dump and ip_set_list resize (CVE-2026-64189)\n  * kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page (CVE-2026-64320)\n  * kernel: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count (CVE-2026-64277)\n  * kernel: Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count (CVE-2026-64276)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * [AlmaLinux-RT] usb_hub_wq items may run on isolated+nohz_full cores (JIRA:AlmaLinux-178088)\n  * SELinux TCP/MPTCP connect check bypass via TCP Fast Open [almalinux-8.10.z] (JIRA:AlmaLinux-222800)\n  * ss core dumped when there is an SCTP session [almalinux-8.10.z] (JIRA:AlmaLinux-212400)\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":"2026-08-26T13:11:43.065891305Z","published":"2026-08-26T00:00:00Z","related":["CVE-2026-52924","CVE-2026-63886","CVE-2026-63913","CVE-2026-64189","CVE-2026-64191","CVE-2026-64276","CVE-2026-64277","CVE-2026-64320"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:59737"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-52924"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-63886"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-63913"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64189"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64191"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64276"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64277"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64320"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492095"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502329"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502438"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502872"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502889"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2507061"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2507290"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2507301"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-59737.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.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":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.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":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.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":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.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":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.json"}},{"package":{"name":"kernel-rt-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.json"}},{"package":{"name":"kernel-rt-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:59737.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":"4.18.0-553.158.1.rt7.499.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/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