{"id":"UBUNTU-CVE-2023-20584","details":"IOMMU improperly handles certain special address ranges with invalid device table entries (DTEs), which may allow an attacker with privileges and a compromised Hypervisor to induce DTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest integrity.","modified":"2026-02-04T02:59:34.836368Z","published":"2024-08-13T17:15:00Z","related":["USN-7561-1"],"upstream":["CVE-2023-20584"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-20584"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-20584"},{"type":"REPORT","url":"https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html"},{"type":"REPORT","url":"https://lore.kernel.org/all/20240820182655.42311-1-john.allen@amd.com/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7561-1"}],"affected":[{"package":{"name":"amd64-microcode","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/amd64-microcode@3.20250311.1ubuntu0.24.04.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.20250311.1ubuntu0.24.04.1"}]}],"versions":["3.20230808.1.1ubuntu1","3.20231019.1ubuntu1","3.20231019.1ubuntu2","3.20231019.1ubuntu2.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"amd64-microcode","binary_version":"3.20250311.1ubuntu0.24.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-20584.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}