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c-ares version 1.34.5 - April 8 2025

This is a security release.

Security: * CVE-2025-31498. A use-after-free bug has been uncovered in read_answers() that was introduced in v1.32.3. Please see https://github.com/c-ares/c-ares/security/advisories/GHSA-6hxc-62jh-p29v

Changes: * Restore Windows XP support. PR [#958]

Bugfixes: * A missing mutex initialization would make busy polling for configuration changes (platforms other than Windows, Linux, MacOS) eat too much CPU PR [#974] * Pkgconfig may be generated wrong for static builds in relation to -pthread PR [#965] * Localhost resolution can fail if only one address family is in /etc/hosts PR [#947]

Thanks go to these friendly people for their efforts and contributions for this release:

  • Brad House (@bradh352)
  • Erik Lax (@eriklax)
  • Florian Pfisterer (@FlorianPfisterer)
  • Kai Pastor (@dg0yt)
Source: README.md, updated 2025-04-08