{"schema_version": "1.7.0", "id": "RLSA-2026:0443", "modified": "2026-01-17T09:04:03.323193Z", "published": "2026-01-17T09:03:12.621081Z", "upstream": ["CVE-2025-39993", "CVE-2025-40240", "CVE-2025-68285"], "summary": "Important: 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: media: rc: fix races with imon_disconnect() (CVE-2025-39993)\n\n* kernel: sctp: avoid NULL dereference when chunk data buffer is missing (CVE-2025-40240)\n\n* kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)\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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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": "0:4.18.0-553.92.1.rt7.433.el8_10"}], "database_specific": {"yum_repository": "NFV"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:0443"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2404121"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2418832"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422801"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}