{"id":"CVE-2023-2911","details":"If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow.\nThis issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.","modified":"2026-04-10T04:57:05.375482Z","published":"2023-06-21T17:15:47.827Z","related":["SUSE-SU-2023:2667-1","SUSE-SU-2023:2836-1","openSUSE-SU-2024:13015-1"],"references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20230703-0010/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5439"},{"type":"ADVISORY","url":"https://kb.isc.org/docs/cve-2023-2911"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2023/06/21/6"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.isc.org/isc-projects/bind9","events":[{"introduced":"35e9c6e31dd742f501624a31c3326db1c7b460fe"},{"last_affected":"4df4cecf05f1ab9ade15a71733684187d1e6ccf7"},{"introduced":"35e9c6e31dd742f501624a31c3326db1c7b460fe"},{"last_affected":"4df4cecf05f1ab9ade15a71733684187d1e6ccf7"},{"introduced":"85a6eb108e884467c4b3af414140d6b033a89a62"},{"last_affected":"f53a0765c32c72a59f338f0a4ef5335264a410db"},{"introduced":"1f554acee8df440c2fc211f976b196b31b9c9284"},{"last_affected":"f53a0765c32c72a59f338f0a4ef5335264a410db"}],"database_specific":{"versions":[{"introduced":"9.16.33"},{"last_affected":"9.16.41"},{"introduced":"9.16.33"},{"last_affected":"9.16.41"},{"introduced":"9.18.7"},{"last_affected":"9.18.15"},{"introduced":"9.18.11"},{"last_affected":"9.18.15"}]}}],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0"}]},{"events":[{"introduced":"0"},{"last_affected":"37"}]},{"events":[{"introduced":"0"},{"last_affected":"38"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-2911.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}