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CVE-2026-12246

CVE-2026-12246 · Out of bounds stack write with crafted APL RR

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

NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes.

CVSS 7.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • nsd

    Versions
    • ≥ 4.14.0, < 4.14.3: Affected (semver)

    Update to 4.14.3

  • nsd Debian:14

    Versions
    • 4.12.0-1
    • 4.12.0-2
    • 4.13.0-1
    • 4.13.0-2
    • 4.13.0-3
    • 4.13.0-4
    • 4.13.0-5
    • 4.13.0-6
    • 4.14.0-1
    • 4.14.1-1
    • 4.14.2-1
    Affected ranges
    • ECOSYSTEM: < 4.14.3-1

    Update to 4.14.3-1

  • nsd Ubuntu:Pro:16.04:LTS

    Versions
    • 4.1.2-1
    • 4.1.6-1
    • 4.1.7-1
    Affected ranges
    • ECOSYSTEM: < 4.1.7-1ubuntu0.1~esm1

    Update to 4.1.7-1ubuntu0.1~esm1

  • nsd Ubuntu:Pro:18.04:LTS

    Versions
    • 4.1.16-1build1
    • 4.1.17-1
    • 4.1.17-1build1
    Affected ranges
    • ECOSYSTEM: < 4.1.17-1ubuntu0.1~esm1

    Update to 4.1.17-1ubuntu0.1~esm1

  • nsd Ubuntu:Pro:20.04:LTS

    Versions
    • 4.1.26-1
    • 4.1.26-1build1
    Affected ranges
    • ECOSYSTEM: < 4.1.26-1ubuntu0.1~esm1

    Update to 4.1.26-1ubuntu0.1~esm1

  • nsd Ubuntu:Pro:22.04:LTS

    Versions
    • 4.3.5-1
    • 4.3.7-1
    • 4.3.8-1
    • 4.3.8-1build1
    • 4.3.9-1
    Affected ranges
    • ECOSYSTEM: < 4.3.9-1ubuntu0.1~esm1

    Update to 4.3.9-1ubuntu0.1~esm1

  • nsd Ubuntu:Pro:24.04:LTS

    Versions
    • 4.7.0-1
    • 4.8.0-1
    • 4.8.0-1build1
    • 4.8.0-1build3
    Affected ranges
    • ECOSYSTEM: < 4.8.0-1ubuntu0.1~esm1

    Update to 4.8.0-1ubuntu0.1~esm1

  • nsd Ubuntu:25.10

    Versions
    • 4.11.1-1
    • 4.12.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nsd Ubuntu:26.10

    Versions
    • 4.14.0-1
    • 4.14.2-1
    • 4.14.3-1
    • 4.15.0-1
    • 4.15.0-1build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nsd Ubuntu:Pro:26.04:LTS

    Versions
    • 4.12.0-1
    • 4.13.0-6
    • 4.14.0-1
    Affected ranges
    • ECOSYSTEM: < 4.14.0-1ubuntu0.1~esm1

    Update to 4.14.0-1ubuntu0.1~esm1

Original sources

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