{"id":"RLSA-2026:64808","summary":"Important: kernel security update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: can: bcm: add locking for bcm_op runtime updates (CVE-2025-38004)\n\n* kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership() (CVE-2026-52933)\n\n* kernel: netfilter: nat: use kfree_rcu to release ops (CVE-2026-53000)\n\n* kernel: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() (CVE-2026-64136)\n\n* kernel: nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page (CVE-2026-64320)\n\n* kernel: nvmet-auth: validate reply message payload bounds against transfer length (CVE-2026-64319)\n\n* kernel: KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU (CVE-2026-64287)\n\n* kernel: smb: client: fix change notify replay double-free (CVE-2026-64384)\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":"2026-09-09T12:30:04.717519435Z","published":"2026-09-09T12:05:17.368443Z","upstream":["CVE-2025-38004","CVE-2026-52933","CVE-2026-53000","CVE-2026-64136","CVE-2026-64287","CVE-2026-64319","CVE-2026-64320","CVE-2026-64384"],"database_specific":{"source_advisory":"RHSA-2026:64808","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:64808"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2370992"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492097"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492273"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502527"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507061"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507096"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507129"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507287"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:64808"}],"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":"0:5.14.0-687.45.1.el9_8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:64808.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}