{"id":"RLSA-2026:86033","summary":"Important: kernel security, bug fix, and enhancement update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)\n\n* kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)\n\n* kernel: USB: serial: mxuport: fix memory corruption with small endpoint (CVE-2026-63899)\n\n* kernel: bridge: mcast: Fix a possible use-after-free when removing a bridge port (CVE-2026-64032)\n\n* kernel: tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction (CVE-2026-64024)\n\n* kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)\n\n* kernel: Bluetooth: hci_sync: Set HCI_CMD_DRAIN_WORKQUEUE during device close (CVE-2026-63974)\n\n* kernel: ipv4: raw: reject IP_HDRINCL packets with ihl \u003c 5 (CVE-2026-64114)\n\n* kernel: ipv4: fib: free fib_alias with kfree_rcu() on insert error path (CVE-2026-64572)\n\n* kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)\n\n* kernel: Linux kernel: Denial of Service due to incorrect GSO state handling in network fragment reassembly (CVE-2026-80590)\n\n* kernel: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() (CVE-2026-89633)\n\n* kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)\n\n* kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()\n\n* kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)\n\n* kernel: ipv4: validate checksum_start before completing checksum (CVE-2026-99999)\n\nBug Fix(es) and Enhancement(s):\n\n* Batch: z-stream xfrm - rhel-9.8.z (NST-Core-26W38) (JIRA:Rocky Linux-256697)\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.","modified":"2026-10-22T00:30:04.284939163Z","published":"2026-10-22T00:04:07.745746Z","upstream":["CVE-2026-31678","CVE-2026-52935","CVE-2026-63899","CVE-2026-63962","CVE-2026-63974","CVE-2026-64024","CVE-2026-64032","CVE-2026-64114","CVE-2026-64572","CVE-2026-74509","CVE-2026-80590","CVE-2026-89633","CVE-2026-93817","CVE-2026-98260","CVE-2026-99999"],"database_specific":{"source_advisory":"RHSA-2026:86033","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:86033"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2461761"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492098"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502325"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502332"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502333"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502356"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502462"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502486"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2511413"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516967"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2525413"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532230"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2540391"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546491"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2553429"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:86033"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:5.14.0-687.59.1.el9_8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:86033.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}