{"schema_version": "1.7.0", "id": "RLSA-2026:3964", "modified": "2026-03-26T12:09:19.913157Z", "published": "2026-03-26T12:01:40.953151Z", "upstream": ["CVE-2025-71085", "CVE-2026-23001"], "summary": "Moderate: kernel-rt security 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: ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() (CVE-2025-71085)\n\n* kernel: macvlan: fix possible UAF in macvlan_forward_source() (CVE-2026-23001)\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:8", "name": "kernel-rt", "purl": "pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:4.18.0-553.111.1.rt7.452.el8_10"}], "database_specific": {"yum_repository": "NFV"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:3964"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2429026"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432664"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}