Linuxsecurity

Denial of Service Vulnerability in c-ares Affects Ubuntu Releases

First seen 11 Dec 2025, 21:51 UTC • Ubuntu

•23.8

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A security issue has been identified in the c-ares library affecting Ubuntu 25.10 and 25.04. The vulnerability allows an attacker to cause c-ares to crash by sending specially crafted queries, leading to a denial of service. This issue arises from c-ares incorrectly handling the termination of certain queries after a maximum number of attempts.

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Denial of Service Vulnerability in c-ares Affects Ubuntu Releases

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