CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
c-ares is an asynchronous resolver library. From ver 1.32.3 until 1.34.7, a use-after-free / double-free in c-ares' query-completion handling. The same flaw — a query's callback being invoked while the query is still linked in the channel's internal lookup structures — is present at multiple points in the resend/finish path (timeout handling, response handling, and query dispatch). If the query, or for ares_getaddrinfo() the owning host_query, is freed as a side effect of that callback, it is then accessed and/or freed a second time. This vulnerability is fixed in ver 1.34.7.
Засегнати продукти
- c-ares c-ares: >= 1.32.3, < 1.34.7
Вид слабост
История
- 3 септември 2026 Публикувано
Други уязвимости в c-ares c-ares
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-33630
- https://nvd.nist.gov/vuln/detail/CVE-2026-33630
- https://github.com/c-ares/c-ares/security/advisories/GHSA-6wfj-rwm7-3542
- https://github.com/c-ares/c-ares/pull/1237
- https://github.com/c-ares/c-ares/commit/1fa3b86a0b8d18fe7b60f3228a01d770feb026bc
- https://github.com/c-ares/c-ares/commit/d823199b688052dcdc1646f2ab4cb8c16b1c644a
- https://github.com/c-ares/c-ares/releases/tag/v1.34.7