{"id":"RLSA-2026:53329","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: cxl/port: Fix use after free of parent_port in cxl_detach_ep() (CVE-2026-31530)\n\n* kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation (CVE-2025-54518)\n\n* kernel: mm/slab: do not limit zeroing to orig_size when only red zoning is enabled (CVE-2026-64368)\n\n* kernel: net: openvswitch: reject oversized nested action attrs (CVE-2026-64531)\n\nBug Fix(es) and Enhancement(s):\n\n* Kernel oops after increasing max number of mac addresses of a mlx5 VF [rhel-9.8.z] (JIRA:Rocky Linux-213036)\n\n* Rocky Linux9.4 - s390/pkey: Check length in pkey_pckmo handler implementation [rhel-9.8.z] (JIRA:Rocky Linux-215578)\n\n* Rocky Linux9.4 - s390/pkey: Check length in PKEY_VERIFYPROTK ioctl [rhel-9.8.z] (JIRA:Rocky Linux-215580)\n\n* cifs: periodic IO errors when rename races with lease break (JIRA:Rocky Linux-192999)\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":"2026-08-12T06:30:03.166153666Z","published":"2026-08-12T06:06:45.472446Z","upstream":["CVE-2025-54518","CVE-2026-31530","CVE-2026-64368","CVE-2026-64531"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:53329"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:53329"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460644"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477784"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507213"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507402"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:53329"}],"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":"0:5.14.0-687.38.1.el9_8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:53329.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"}]}