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CVE-2026-101341

CVE-2026-101341 · Stack overwrite from specially formatted TXT-DATA RDATA field

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

Tokens of text in RDATA (of for example TXT records) under 32 bytes are not checked to stay within the space reserved for the RDATA allowing for arbitrary sized out of bound stack writes, including an overwrite of a callback function pointer which is called directly after parse. Zone files which are written out by NSD itself, such for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).

CVSS 8.7 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • nsd

    Versions
    • ≥ 4.10.0, < 4.15.3: Affected (semver)

    Update to 4.15.3

  • nsd Debian:12

    Versions
    • 4.10.1-1
    • 4.10.1~rc2-1
    • 4.10.1~rc2-2
    • 4.11.0-1
    • 4.11.1-1
    • 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
    • 4.14.3-1
    • 4.15.0-1
    • 4.15.0~rc1-1
    • 4.15.1-1
    • 4.15.2-1
    • 4.15.3-1
    • 4.15.4-1
    • 4.6.1-1
    • 4.7.0-1
    • 4.8.0-1
    • 4.9.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nsd Debian:13

    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
    • 4.14.3-1
    • 4.15.0-1
    • 4.15.0~rc1-1
    • 4.15.1-1
    • 4.15.2-1
    • 4.15.3-1
    • 4.15.4-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 4.14.3-1
    • 4.15.0-1
    • 4.15.0~rc1-1
    • 4.15.1-1
    • 4.15.2-1
    Affected ranges
    • ECOSYSTEM: < 4.15.3-1

    Update to 4.15.3-1

  • nsd Ubuntu:Pro:16.04:LTS

    Versions
    • 4.1.2-1
    • 4.1.6-1
    • 4.1.7-1
    • 4.1.7-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nsd Ubuntu:Pro:18.04:LTS

    Versions
    • 4.1.16-1build1
    • 4.1.17-1
    • 4.1.17-1build1
    • 4.1.17-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nsd Ubuntu:Pro:20.04:LTS

    Versions
    • 4.1.26-1
    • 4.1.26-1build1
    • 4.1.26-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 4.3.9-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nsd Ubuntu:Pro:24.04:LTS

    Versions
    • 4.7.0-1
    • 4.8.0-1
    • 4.8.0-1build1
    • 4.8.0-1build3
    • 4.8.0-1ubuntu0.1~esm1
    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
    • 4.14.0-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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