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ALPINE-CVE-2025-40777

ALPINE-CVE-2025-40777

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

If a `named` caching resolver is configured with `serve-stale-enable` `yes`, and with `stale-answer-client-timeout` set to `0` (the only allowable value other than `disabled`), and if the resolver, in the process of resolving a query, encounters a CNAME chain involving a specific combination of cached or authoritative records, the daemon will abort with an assertion failure. This issue affects BIND 9 versions 9.20.0 through 9.20.10, 9.21.0 through 9.21.9, and 9.20.9-S1 through 9.20.10-S1.

CVSS 7.5 · High · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind Alpine:v3.22

    Affected ranges
    • ECOSYSTEM: < 9.20.11-r0

    Update to 9.20.11-r0

  • bind Alpine:v3.23

    Affected ranges
    • ECOSYSTEM: < 9.20.11-r0

    Update to 9.20.11-r0

  • bind Alpine:v3.24

    Affected ranges
    • ECOSYSTEM: < 9.20.11-r0

    Update to 9.20.11-r0

Original sources

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