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CVE-2025-30258

CVE-2025-30258

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

In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."

CVSS 2.7 · Low · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • gnupg

    Versions
    • ≥ 0, < 2.5.5: Affected (semver)

    Update to 2.5.5

  • gnupg2 Debian:12

    Versions
    • 2.2.40-1.1
    • 2.2.40-1.1+deb12u1
    • 2.2.40-1.1+deb12u2
    • 2.2.40-1.1+hurd.1
    • 2.2.40-1.1+loong64
    • 2.2.40-2
    • 2.2.40-3
    • 2.2.43-1
    • 2.2.43-2
    • 2.2.43-3
    • 2.2.43-4
    • 2.2.43-5
    • 2.2.43-6
    • 2.2.43-7
    • 2.2.43-8
    • 2.2.44-1
    • 2.2.45-1
    • 2.2.45-2
    • 2.2.45-3
    • 2.2.46-1
    • 2.2.46-2
    • 2.2.46-3
    • 2.2.46-4
    • 2.2.46-5
    • 2.2.46-6
    • 2.2.46~pre1-1
    • 2.3.1-1
    • 2.4.3-2
    • 2.4.4-1
    • 2.4.4-2
    • 2.4.4-3
    • 2.4.4-4
    • 2.4.5-1
    • 2.4.5-2
    • 2.4.5-3
    • 2.4.6-1
    • 2.4.7-1
    • 2.4.7-10
    • 2.4.7-11
    • 2.4.7-12
    • 2.4.7-13
    • 2.4.7-14
    • 2.4.7-15
    • 2.4.7-16
    • 2.4.7-17
    • 2.4.7-18
    • 2.4.7-19
    • 2.4.7-2
    • 2.4.7-20
    • 2.4.7-21
    • 2.4.7-3
    • 2.4.7-4
    • 2.4.7-5
    • 2.4.7-6
    • 2.4.7-7
    • 2.4.7-8
    • 2.4.7-9
    • 2.4.8-1
    • 2.4.8-2
    • 2.4.8-3
    • 2.4.8-4
    • 2.4.8-5
    • 2.4.8-6
    • 2.4.9-1
    • 2.4.9-2
    • 2.4.9-3
    • 2.4.9-4
    • 2.4.9-5
    • 2.4.9-6
    • 2.4.9-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • gnupg2 Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.2.46-5

    Update to 2.2.46-5

  • gnupg2 Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.2.46-5

    Update to 2.2.46-5

  • gnupg2 Ubuntu:Pro:16.04:LTS

    Versions
    • 2.0.28-3ubuntu1
    • 2.0.28-3ubuntu2
    • 2.1.11-6ubuntu1
    • 2.1.11-6ubuntu2
    • 2.1.11-6ubuntu2.1
    • 2.1.11-6ubuntu2.1+esm1
    Affected ranges
    • ECOSYSTEM: < 2.1.11-6ubuntu2.1+esm2

    Update to 2.1.11-6ubuntu2.1+esm2

  • gnupg2 Ubuntu:Pro:18.04:LTS

    Versions
    • 2.1.15-1ubuntu8
    • 2.2.4-1ubuntu1
    • 2.2.4-1ubuntu1.1
    • 2.2.4-1ubuntu1.2
    • 2.2.4-1ubuntu1.3
    • 2.2.4-1ubuntu1.4
    • 2.2.4-1ubuntu1.5
    • 2.2.4-1ubuntu1.6
    Affected ranges
    • ECOSYSTEM: < 2.2.4-1ubuntu1.6+esm1

    Update to 2.2.4-1ubuntu1.6+esm1

  • gnupg2 Ubuntu:20.04:LTS

    Versions
    • 2.2.12-1ubuntu3
    • 2.2.17-3ubuntu1
    • 2.2.19-3ubuntu2
    • 2.2.19-3ubuntu2.1
    • 2.2.19-3ubuntu2.2
    Affected ranges
    • ECOSYSTEM: < 2.2.19-3ubuntu2.4

    Update to 2.2.19-3ubuntu2.4

  • gnupg2 Ubuntu:22.04:LTS

    Versions
    • 2.2.20-1ubuntu4
    • 2.2.27-2ubuntu1
    • 2.2.27-3ubuntu1
    • 2.2.27-3ubuntu2
    • 2.2.27-3ubuntu2.1
    Affected ranges
    • ECOSYSTEM: < 2.2.27-3ubuntu2.3

    Update to 2.2.27-3ubuntu2.3

  • gnupg2 Ubuntu:24.04:LTS

    Versions
    • 2.2.40-1.1ubuntu1
    • 2.4.4-2ubuntu7
    • 2.4.4-2ubuntu15
    • 2.4.4-2ubuntu16
    • 2.4.4-2ubuntu17
    Affected ranges
    • ECOSYSTEM: < 2.4.4-2ubuntu17.2

    Update to 2.4.4-2ubuntu17.2

  • gnupg2 Ubuntu:25.10

    Affected ranges
    • ECOSYSTEM: < 2.4.4-2ubuntu23

    Update to 2.4.4-2ubuntu23

Original sources

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