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CVE-2025-62408

CVE-2025-62408 · c-ares has a Use After Free vulnerability when connection is cleaned up after error

This page contains facts from public vulnerability sources. Check the original advisory before updating.

c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.

CVSS 5.9 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • c-ares

    Versions
    • > 1.32.3, < 1.34.6: Affected

    No fix published

  • c-ares Debian:13

    Versions
    • 1.34.5-1
    Affected ranges
    • ECOSYSTEM: < 1.34.5-1+deb13u1

    Update to 1.34.5-1+deb13u1

  • c-ares Debian:14

    Versions
    • 1.34.5-1
    Affected ranges
    • ECOSYSTEM: < 1.34.6-1

    Update to 1.34.6-1

  • c-ares Ubuntu:25.10

    Versions
    • 1.34.4-2.1
    • 1.34.5-1
    Affected ranges
    • ECOSYSTEM: < 1.34.5-1ubuntu0.1

    Update to 1.34.5-1ubuntu0.1

Original sources

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