{"schema_version": "1.7.0", "id": "RLSA-2026:2821", "modified": "2026-02-26T20:49:39.247423Z", "published": "2026-02-26T20:43:38.668572Z", "upstream": ["CVE-2023-53762", "CVE-2025-40168", "CVE-2025-40304"], "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: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() (CVE-2025-40168)\n\n* kernel: Linux kernel Bluetooth: Denial of Service due to use-after-free in connection handling (CVE-2023-53762)\n\n* kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)\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:L/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": "0:4.18.0-553.105.1.rt7.446.el8_10"}], "database_specific": {"yum_repository": "NFV"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:2821"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414482"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419838"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419870"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}