==========================================================================
Ubuntu Security Notice USN-7477-1
May 05, 2025

c-ares vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.10

Summary:

c-ares could be made to crash if it received specially crafted network
traffic.

Software Description:
- c-ares: library for asynchronous name resolution

Details:

It was discovered that c-ares incorrectly handled re-enqueuing certain
queries. A remote 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 25.04
  libcares2                       1.34.4-2.1ubuntu0.1

Ubuntu 24.10
  libcares2                       1.33.0-1ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7477-1
  CVE-2025-31498

Package Information:
  https://launchpad.net/ubuntu/+source/c-ares/1.34.4-2.1ubuntu0.1
  https://launchpad.net/ubuntu/+source/c-ares/1.33.0-1ubuntu0.1