{"id":"CVE-2024-21953","aliases":["DEBIAN-CVE-2024-21953","EUVD-2024-19559","GHSA-846p-qcjx-5365","UBUNTU-CVE-2024-21953"],"status":"published","title":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU...","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","severity":{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00188,"percentile":0.08473,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1284"],"published":"2026-02-10T19:11:17Z","modified":"2026-11-07T06:00:06Z","fixes":[{"ecosystem":"Debian:14","package":"amd64-microcode","fixed_in":["3.20260923.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.20120117-1","1.20120117-1","1.20120117-2","1.20120117-2~bpo60+1","1.20120910-1","1.20120910-1~bpo60+1","1.20120910-2","1.20120910-2~bpo60+1","1.20120910-3","1.20141028.1","1.20160316.1","2.20120910-1","2.20120910-1~bpo70+1","2.20131007.1","2.20131007.1+really20130710.1","2.20141028.1","2.20141028.1~bpo70+1","2.20160316.1","2.20160316.1~bpo70+1","2.20160316.1~deb8u1","3.20160316.1","3.20160316.2","3.20160316.3","3.20171205.1","3.20171205.2","3.20180515.1","3.20180524.1","3.20180524.1~bpo9+1","3.20181128.1","3.20181128.1~bpo9+1","3.20181128.1~deb8u1","3.20181128.1~deb9u1","3.20181128.1~deb9u2","3.20191021.1","3.20191218.1","3.20220411.1","3.20220411.2","3.20230414.1","3.20230719.1","3.20230719.1~deb10u1","3.20230719.1~deb11u1","3.20230719.1~deb12u1","3.20230808.1","3.20230808.1.1","3.20230808.1.1~deb11u1","3.20230808.1.1~deb12u1","3.20230823.1","3.20231019.1","3.20240116.2","3.20240116.2+nmu1","3.20240710.1","3.20240710.2","3.20240710.2~deb11u1","3.20240710.2~deb12u1","3.20240820.1","3.20240820.1~deb11u1","3.20240820.1~deb12u1","3.20250311.1","3.20250311.1~deb11u1","3.20250311.1~deb12u1","3.20251202.1","3.20260923.1"]},{"source":"osv","ecosystem":"Debian:13","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.20120117-1","1.20120117-1","1.20120117-2","1.20120117-2~bpo60+1","1.20120910-1","1.20120910-1~bpo60+1","1.20120910-2","1.20120910-2~bpo60+1","1.20120910-3","1.20141028.1","1.20160316.1","2.20120910-1","2.20120910-1~bpo70+1","2.20131007.1","2.20131007.1+really20130710.1","2.20141028.1","2.20141028.1~bpo70+1","2.20160316.1","2.20160316.1~bpo70+1","2.20160316.1~deb8u1","3.20160316.1","3.20160316.2","3.20160316.3","3.20171205.1","3.20171205.2","3.20180515.1","3.20180524.1","3.20180524.1~bpo9+1","3.20181128.1","3.20181128.1~bpo9+1","3.20181128.1~deb8u1","3.20181128.1~deb9u1","3.20181128.1~deb9u2","3.20191021.1","3.20191218.1","3.20220411.1","3.20220411.2","3.20230414.1","3.20230719.1","3.20230719.1~deb10u1","3.20230719.1~deb11u1","3.20230719.1~deb12u1","3.20230808.1","3.20230808.1.1","3.20230808.1.1~deb11u1","3.20230808.1.1~deb12u1","3.20230823.1","3.20231019.1","3.20240116.2","3.20240116.2+nmu1","3.20240710.1","3.20240710.2","3.20240710.2~deb11u1","3.20240710.2~deb12u1","3.20240820.1","3.20240820.1~deb11u1","3.20240820.1~deb12u1","3.20250311.1","3.20250311.1~deb11u1","3.20250311.1~deb12u1","3.20251202.1","3.20260923.1"]},{"source":"osv","ecosystem":"Debian:14","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20260923.1"}]}],"versions":["0.20120117-1","1.20120117-1","1.20120117-2","1.20120117-2~bpo60+1","1.20120910-1","1.20120910-1~bpo60+1","1.20120910-2","1.20120910-2~bpo60+1","1.20120910-3","1.20141028.1","1.20160316.1","2.20120910-1","2.20120910-1~bpo70+1","2.20131007.1","2.20131007.1+really20130710.1","2.20141028.1","2.20141028.1~bpo70+1","2.20160316.1","2.20160316.1~bpo70+1","2.20160316.1~deb8u1","3.20160316.1","3.20160316.2","3.20160316.3","3.20171205.1","3.20171205.2","3.20180515.1","3.20180524.1","3.20180524.1~bpo9+1","3.20181128.1","3.20181128.1~bpo9+1","3.20181128.1~deb8u1","3.20181128.1~deb9u1","3.20181128.1~deb9u2","3.20191021.1","3.20191218.1","3.20220411.1","3.20220411.2","3.20230414.1","3.20230719.1","3.20230719.1~deb10u1","3.20230719.1~deb11u1","3.20230719.1~deb12u1","3.20230808.1","3.20230808.1.1","3.20230808.1.1~deb11u1","3.20230808.1.1~deb12u1","3.20230823.1","3.20231019.1","3.20240116.2","3.20240116.2+nmu1","3.20240710.1","3.20240710.2","3.20240710.2~deb11u1","3.20240710.2~deb12u1","3.20240820.1","3.20240820.1~deb11u1","3.20240820.1~deb12u1","3.20250311.1","3.20250311.1~deb11u1","3.20250311.1~deb12u1","3.20251202.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20230808.1.1ubuntu1","3.20231019.1ubuntu1","3.20231019.1ubuntu2","3.20231019.1ubuntu2.1","3.20250311.1ubuntu0.24.04.1","3.20251202.1ubuntu0.24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20240820.1ubuntu1","3.20250311.1ubuntu1","3.20250708.1ubuntu1","3.20251202.1ubuntu0.25.10.1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20251202.1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"amd64-microcode","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20250708.1ubuntu1","3.20250708.1ubuntu2","3.20251202.1ubuntu1","3.20251202.1ubuntu2"]}],"products":[{"vendor":"amd","product":"amd epyc™ 8004 series processors"},{"vendor":"amd","product":"amd epyc™ 9004 series processors"},{"vendor":"amd","product":"amd epyc™ embedded 9004 series processors"}],"references":[{"url":"https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html","tags":["report"]},{"url":"https://www.amd.com/en/resources/product-security/bulletin/Emb-Auto.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21953"},{"url":"https://github.com/advisories/GHSA-846p-qcjx-5365"},{"url":"https://security-tracker.debian.org/tracker/CVE-2024-21953","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-21953","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-21953","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2024-21953","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","status":"published","published":"2026-02-10T19:11:17.966Z","modified":"2026-02-10T21:00:57.491Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T14:34:04.341725Z"}],"euvd":[{"id":"EUVD-2024-19559","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","status":"published","published":"2026-02-10T19:11:17Z","modified":"2026-02-10T21:00:57Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:48:41.699812Z"}],"ghsa":[{"id":"GHSA-846p-qcjx-5365","title":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU...","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","status":"published","published":"2026-02-10T21:31:30Z","modified":"2026-02-10T21:31:42Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T15:06:08.47148Z"}],"nvd":[{"id":"CVE-2024-21953","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","status":"published","published":"2026-02-10T20:16:42.407Z","modified":"2026-06-17T07:10:27.003Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T14:10:47.444899Z"}],"osv":[{"id":"DEBIAN-CVE-2024-21953","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","status":"published","published":"2026-02-10T20:16:42.407Z","modified":"2026-11-07T06:00:06.211656748Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-07T06:09:50.435672Z"},{"id":"UBUNTU-CVE-2024-21953","description":"Improper input validation in IOMMU could allow a malicious hypervisor to reconfigure IOMMU registers resulting in loss of guest data integrity.","status":"published","published":"2026-02-10T20:16:00Z","modified":"2026-10-17T12:56:29.533526495Z","cvss":[{"version":"4.0","score":5.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:54:42.68848Z"}]}}
