{"id":"RLSA-2026:65147","summary":"Important: microcode_ctl security, bug fix, and enhancement update","details":"The microcode_ctl packages provide microcode updates for Intel and AMD processors.\n\nSecurity Fix(es):\n\n* kernel: hypervisor: Intel Processors: Privilege escalation in Ring 0 via improper value handling (CVE-2025-35973)\n\n* kernel: microcode_ctl: Intel Xeon 6 Processors: Privilege escalation via improper memory range handling in SMM (CVE-2025-31936)\n\nBug Fix(es) and Enhancement(s):\n\n* [Rocky Linux 8] Update Intel CPU microcode to the latest version (JIRA:Rocky Linux-240770)\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":"2026-09-09T06:30:16.250845523Z","published":"2026-09-09T06:01:04.826697Z","upstream":["CVE-2025-31936","CVE-2025-35973"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:65147","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:65147"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2514104"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2514115"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65147"}],"affected":[{"package":{"name":"microcode_ctl","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/microcode_ctl?distro=rocky-linux-8&epoch=4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4:20260812-1.el8_10"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:65147.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}