CVE-2026-33630

A flaw was found in c-ares. A use-after-free / double-free vulnerability exists in the query-completion handling path, where a query callback is invoked while the query is still linked in internal lookup structures. A remote attacker can exploit this via aresgetaddrinfo over TCP by sending crafte...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the query completion process. An attacker can cause memory corruption and application crash by sending crafted DNS responses that manipulate the sequence of query completions, such as forcing an EDNS-downgrade retry an...