{"id":"UBUNTU-CVE-2025-29939","details":"Improper access control in secure encrypted virtualization (SEV) could allow a privileged attacker to write to the reverse map page (RMP) during secure nested paging (SNP) initialization, potentially resulting in a loss of guest memory confidentiality and integrity.","modified":"2026-06-25T19:15:20.860517942Z","published":"2026-02-10T20:16:00Z","upstream":["CVE-2025-29939"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-29939"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-29939"},{"type":"REPORT","url":"https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html"}],"affected":[{"package":{"name":"amd64-microcode","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/amd64-microcode?arch=source&distro=noble"},"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"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20251202.1ubuntu0.24.04.1","binary_name":"amd64-microcode"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29939.json"}},{"package":{"name":"amd64-microcode","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/amd64-microcode?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20240820.1ubuntu1","3.20250311.1ubuntu1","3.20250708.1ubuntu1","3.20251202.1ubuntu0.25.10.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.20251202.1ubuntu0.25.10.1","binary_name":"amd64-microcode"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29939.json"}},{"package":{"name":"amd64-microcode","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/amd64-microcode?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.20250708.1ubuntu1","3.20250708.1ubuntu2","3.20251202.1ubuntu1","3.20251202.1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"amd64-microcode","binary_version":"3.20251202.1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29939.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N"},{"type":"Ubuntu","score":"medium"}]}