{"id":"UBUNTU-CVE-2025-62408","details":"c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.","modified":"2026-04-22T19:59:45.295621Z","published":"2025-12-08T22:15:00Z","related":["USN-7925-1"],"upstream":["CVE-2025-62408"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-62408"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-62408"},{"type":"REPORT","url":"https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7925-1"}],"affected":[{"package":{"name":"c-ares","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/c-ares@1.34.5-1ubuntu0.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.34.5-1ubuntu0.1"}]}],"versions":["1.34.4-2.1","1.34.5-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libc-ares2","binary_version":"1.34.5-1ubuntu0.1"},{"binary_name":"libcares2","binary_version":"1.34.5-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62408.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}