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ALPINE-CVE-2026-5950

ALPINE-CVE-2026-5950

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

An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

CVSS 5.3 · Medium · Fix available

Published
Updated

Stack: system

Affected products and versions

  • bind Alpine:v3.20

    Affected ranges
    • ECOSYSTEM: ≥ 9.18.36, < 9.18.49-r0

    Update to 9.18.49-r0

  • bind Alpine:v3.21

    Affected ranges
    • ECOSYSTEM: ≥ 9.18.36, < 9.18.49-r0

    Update to 9.18.49-r0

  • bind Alpine:v3.22

    Affected ranges
    • ECOSYSTEM: ≥ 9.18.36, < 9.20.23-r0

    Update to 9.20.23-r0

  • bind Alpine:v3.23

    Affected ranges
    • ECOSYSTEM: ≥ 9.18.36, < 9.20.23-r0

    Update to 9.20.23-r0

  • bind Alpine:v3.24

    Affected ranges
    • ECOSYSTEM: ≥ 9.18.36, < 9.20.23-r0

    Update to 9.20.23-r0

Original sources

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