{"schema_version": "1.7.0", "id": "RLSA-2026:53329", "modified": "2026-08-12T06:12:31.863958Z", "published": "2026-08-12T06:06:45.472446Z", "upstream": ["CVE-2025-54518", "CVE-2026-31530", "CVE-2026-64368", "CVE-2026-64531"], "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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "kernel", "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"}}]}], "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"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:53329"}}