{"id":"CVE-2025-30193","details":"In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP connection from a client, an attacker can cause a denial of service by crafting a TCP exchange that triggers an exhaustion of the stack and a crash of DNSdist, causing a denial of service.\n\nThe remedy is: upgrade to the patched 1.9.10 version.\n\nA workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection setting.\n\nWe would like to thank Renaud Allard for bringing this issue to our attention.","modified":"2026-04-10T05:24:41.832433Z","published":"2025-05-20T12:15:19Z","related":["SUSE-SU-2025:01743-1","SUSE-SU-2025:01745-1","SUSE-SU-2025:01792-1"],"references":[{"type":"ADVISORY","url":"https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-03.html"}],"schema_version":"1.7.5"}