{"id":"CVE-2024-21954","aliases":["EUVD-2024-55846","GHSA-77qc-mwxr-7854"],"status":"published","title":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices...","description":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.","severity":{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-13","score":0.00267,"percentile":0.18962,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-754"],"published":"2026-11-12T19:06:05Z","modified":"2026-11-12T21:31:25Z","products":[{"vendor":"amd","product":"amd epyc™ 7003 series processors"},{"vendor":"amd","product":"amd epyc™ 9004 series processors"},{"vendor":"amd","product":"amd epyc™ embedded 7003 series processors"},{"vendor":"amd","product":"amd epyc™ embedded 9004 series processors (formerly codenamed \"genoa\")"}],"references":[{"url":"https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3052.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21954"},{"url":"https://github.com/advisories/GHSA-77qc-mwxr-7854"}],"sources":{"cve":[{"id":"CVE-2024-21954","description":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.","status":"published","published":"2026-11-12T19:06:05.496Z","modified":"2026-11-13T00:14:43.441Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high","assessor":"cna"}],"cwes":["CWE-754"],"updated_at":"2026-11-12T20:48:01.59363Z"}],"euvd":[{"id":"EUVD-2024-55846","description":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.","status":"published","published":"2026-11-12T19:06:05Z","modified":"2026-11-13T00:14:43Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"high"}],"updated_at":"2026-11-12T23:36:14.500793Z"}],"ghsa":[{"id":"GHSA-77qc-mwxr-7854","title":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices...","description":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.","status":"published","published":"2026-11-12T21:31:24Z","modified":"2026-11-12T21:31:25Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-12T21:43:38.108368Z"}],"nvd":[{"id":"CVE-2024-21954","description":"Improper exception handling in IOMMU could allow an invalidate command to be sent to PCIe devices that do not support Address Translation Cache (ATC), potentially resulting in denial of service.","status":"published","published":"2026-11-12T19:16:44.843Z","modified":"2026-11-13T02:18:46.81Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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":"high","assessor":"secondary"}],"cwes":["CWE-754"],"updated_at":"2026-11-12T21:32:44.811521Z"}]}}