{"schema_version": "1.7.0", "id": "RLSA-2026:50979", "modified": "2026-08-07T12:10:32.971571Z", "published": "2026-08-07T12:02:04.507217Z", "upstream": ["CVE-2025-54518"], "summary": "Important: kernel-rt security, bug fix, and enhancement 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: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation (CVE-2025-54518)\n\nBug Fix(es) and Enhancement(s):\n\n* Kernel crash in bpf_for_each_array_elem() due to missing backport of upstream commit 4b6313cf99b0 (JIRA:Rocky Linux-191844)\n\n* gfs2: xfstests generic/363 failure [rhel-8.10.z] (JIRA:Rocky Linux-214099)\n\n* Rocky Linux8: HYPERV hv_storvsc driver can we add additional code to allow PERSISTENT_RESERVE_IN [Rocky Linux 8.10Z]  (JIRA:Rocky Linux-188270)\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:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:8", "name": "kernel-rt", "purl": "pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:4.18.0-553.153.1.rt7.494.el8_10"}], "database_specific": {"yum_repository": "NFV"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:50979"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477784"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}