{"id":"USN-8853-1","summary":"opensbi vulnerability","details":"It was discovered that OpenSBI did not properly validate the counter index\nmask in SBI PMU extension requests. An attacker could use this issue to\ncause a denial of service.","modified":"2026-10-01T00:28:49.325899004Z","published":"2026-09-30T13:02:21Z","related":["UBUNTU-CVE-2025-63913"],"upstream":["CVE-2025-63913","UBUNTU-CVE-2025-63913"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8853-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-63913"}],"affected":[{"package":{"name":"opensbi","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/opensbi?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3-1ubuntu0.22.04.3"}]}],"versions":["0.9-2ubuntu2","0.9+160.723aa88ff4-0ubuntu1","0.9+187.52af6e4b52-0ubuntu1","1.0-1","1.0-3ubuntu1","1.1-0ubuntu0.22.04.1","1.3-1ubuntu0.22.04.1","1.3-1ubuntu0.22.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.3-1ubuntu0.22.04.3","binary_name":"opensbi"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-63913"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8853-1.json"}}],"schema_version":"1.9.0"}