{"id":"CVE-2022-3924","details":"This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero.\n\nIf the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure.\nThis issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.","modified":"2026-07-17T21:01:44.482612750Z","published":"2023-01-26T21:16:03.273Z","related":["ALSA-2023:2261","ALSA-2023:2792","SUSE-SU-2023:0341-1","openSUSE-SU-2024:12641-1"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:a:isc:bind:9.16.12:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.14:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.21:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.32:s1:*:*:supported_preview:*:*:*","cpe:2.3:a:isc:bind:9.16.36:s1:*:*:supported_preview:*:*:*"],"extracted_events":[{"introduced":"9.16.12-s1"},{"last_affected":"9.16.12-s1"},{"introduced":"9.16.12-s1"},{"last_affected":"9.16.12-s1"},{"introduced":"9.16.13-s1"},{"last_affected":"9.16.13-s1"},{"introduced":"9.16.13-s1"},{"last_affected":"9.16.13-s1"},{"introduced":"9.16.14-s1"},{"last_affected":"9.16.14-s1"},{"introduced":"9.16.14-s1"},{"last_affected":"9.16.14-s1"},{"introduced":"9.16.21-s1"},{"last_affected":"9.16.21-s1"},{"introduced":"9.16.21-s1"},{"last_affected":"9.16.21-s1"},{"introduced":"9.16.32-s1"},{"last_affected":"9.16.32-s1"},{"introduced":"9.16.32-s1"},{"last_affected":"9.16.32-s1"},{"introduced":"9.16.36-s1"},{"last_affected":"9.16.36-s1"},{"introduced":"9.16.36-s1"},{"last_affected":"9.16.36-s1"}],"source":"CPE_STRING","vendor_product":"isc:bind"}]},"references":[{"type":"ADVISORY","url":"https://kb.isc.org/docs/cve-2022-3924"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/isc-projects/bind9","events":[{"introduced":"aeb943df66f7db58fa7ff814a84fd25b8a6c8379"},{"fixed":"2b2afb28abf4fb235ce0e9b1245cb673622c7dff"},{"introduced":"8db45afa1affcb823e68afdeddedf93e136f5d3e"},{"fixed":"1f554acee8df440c2fc211f976b196b31b9c9284"},{"introduced":"cab15392afd841fe3b0bacd894003376d857459a"},{"fixed":"a752887dce93b705a62b6f3769679c94fb43fbc7"}],"database_specific":{"extracted_events":[{"introduced":"9.16.12"},{"fixed":"9.16.37"},{"introduced":"9.18.0"},{"fixed":"9.18.11"},{"introduced":"9.19.0"},{"fixed":"9.19.9"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*"}}],"versions":["v9.19.0","v9.18.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-3924.json"}},{"ranges":[{"type":"GIT","repo":"https://gitlab.isc.org/isc-projects/bind9","events":[{"introduced":"aeb943df66f7db58fa7ff814a84fd25b8a6c8379"},{"fixed":"2b2afb28abf4fb235ce0e9b1245cb673622c7dff"},{"introduced":"8db45afa1affcb823e68afdeddedf93e136f5d3e"},{"fixed":"1f554acee8df440c2fc211f976b196b31b9c9284"},{"introduced":"cab15392afd841fe3b0bacd894003376d857459a"},{"fixed":"a752887dce93b705a62b6f3769679c94fb43fbc7"}],"database_specific":{"cpe":"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*","extracted_events":[{"introduced":"9.16.12"},{"fixed":"9.16.37"},{"introduced":"9.18.0"},{"fixed":"9.18.11"},{"introduced":"9.19.0"},{"fixed":"9.19.9"}],"source":"CPE_RANGE"}}],"versions":["v9.19.0","v9.18.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-3924.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}