{"id":"RLSA-2026:0443","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.","modified":"2026-03-11T06:38:57.155761Z","published":"2026-01-17T09:03:12.621081Z","upstream":["CVE-2025-39993","CVE-2025-40240","CVE-2025-68285"],"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"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"Rocky Linux:8","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"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:0443.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}