{"id":"ALSA-2026:26428","summary":"Important: kernel-rt security 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: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)\n  * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)\n  * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)\n  * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)\n  * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)\n  * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)\n  * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)\n  * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)\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":"2026-06-17T12:59:21.591507562Z","published":"2026-06-16T00:00:00Z","related":["CVE-2026-31669","CVE-2026-31786","CVE-2026-31787","CVE-2026-43110","CVE-2026-43329","CVE-2026-46056","CVE-2026-46125","CVE-2026-46152"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26428"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-31669"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-31786"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-31787"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-43110"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-43329"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-46056"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-46125"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-46152"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2461503"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2464092"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2464096"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2467014"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2468124"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2482181"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2482563"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2482608"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-26428.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.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":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.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":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.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":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.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":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.json"}},{"package":{"name":"kernel-rt-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.json"}},{"package":{"name":"kernel-rt-modules","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-modules"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:26428.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":"4.18.0-553.134.1.rt7.475.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/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