========================================================================== Ubuntu Security Notice USN-7925-1 December 11, 2025
c-ares vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 Summary: c-ares could be made to crash if it received specially crafted queries. Software Description: - c-ares: library for asynchronous name resolution Details: It was discovered that c-ares incorrectly handled terminating certain queries after a maximum number of attempts. An attacker could possibly use this issue to cause c-ares to crash, resulting in a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libcares2 1.34.5-1ubuntu0.1 Ubuntu 25.04 libcares2 1.34.4-2.1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7925-1 CVE-2025-62408 Package Information: https://launchpad.net/ubuntu/+source/c-ares/1.34.5-1ubuntu0.1 https://launchpad.net/ubuntu/+source/c-ares/1.34.4-2.1ubuntu0.2
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