A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.
| Software | From | Fixed in |
|---|---|---|
| fedoraproject / fedora | 33 | 33.x |
| c-ares / c-ares | 1.16.0 | 1.16.0.x |