Описание
ELSA-2026-42096: c-ares security update (IMPORTANT)
[1.34.6-2]
- Fix double-free in process_timeouts() (CVE-2026-33630) Resolves: RHEL-192867
Обновленные пакеты
Oracle Linux 10
Oracle Linux aarch64
c-ares-devel
1.34.6-2.el10_2
c-ares
1.34.6-2.el10_2
Oracle Linux x86_64
c-ares-devel
1.34.6-2.el10_2
c-ares
1.34.6-2.el10_2
Связанные CVE
Связанные уязвимости
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 ares_getaddrinfo() over TCP by sending crafted DNS responses that force an EDNS-downgrade retry followed by a connection reset, causing the internal completion handler to access freed memory. This leads to memory corruption and a crash (denial of service), with potential for further impact depending on the allocator and build configuration.
