CVE catalog

CVE-2025-30187

DNSdist vulnerabilities

[CVE catalog]

Severity
Low · CVSS 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Published
Source
[NVD] · [CVE record]
EPSS
0.29% · Oct 25, 2026

In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiandnsdistsid2.1.3-1fixed
Debiandnsdistforky2.1.3-1fixed
Debiandnsdisttrixie1.9.16-0+deb13u1fixed
Debiandnsdisttrixie-security1.9.16-0+deb13u1fixed
Debiandnsdistbookworm1.7.3-2not affected
Ubuntudnsdistnoble1.8.3-2ubuntu0.1~esm1fixed
Ubuntudnsdistpro1.8.0-1vulnerable
Ubuntudnsdistpro1.8.2-1vulnerable
Ubuntudnsdistpro1.8.2-2vulnerable
Ubuntudnsdistpro1.8.2-3vulnerable
Ubuntudnsdistpro1.8.3-1vulnerable
Ubuntudnsdistpro1.8.3-2vulnerable
Ubuntudnsdistpro1.8.3-2build1vulnerable
Ubuntudnsdistpro1.8.3-2build2vulnerable
Ubuntudnsdistpro1.8.3-2ubuntu0.1~esm1fixed
Ubuntudnsdist25.101.9.8-1vulnerable
Ubuntudnsdist25.101.9.10-1vulnerable
Ubuntudnsdist25.101.9.10-1ubuntu0.1fixed
Susednsdistlinux enterprise server 16.01.9.11-160000.1.1fixed
Susednsdistlinux enterprise server for sap applications 16.01.9.11-160000.1.1fixed
Opensusednsdistleap 16.01.9.11-160000.1.1fixed
Susednsdistlinux enterprise module for basesystem 15 sp71.9.11-150700.3.6.1fixed
Ubuntudnsdist25.101.9.8-1vulnerable
Ubuntudnsdist25.101.9.10-1vulnerable
Ubuntudnsdist25.101.9.10-1ubuntu0.1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiandnsdistsourcesid2.0.1-1not yet assignedNot reported[1115643]
Debiandnsdistsourceforky2.0.1-1not yet assignedNot reported[1115643]
Debiandnsdistsourcetrixie1.9.10-1+deb13u1not yet assignedNot reported[1115643]
DebiandnsdistsourcebookwormNot affectedunimportantNot reported[1115643]
Ubuntudnsdistdebnoble1.8.3-2ubuntu0.1~esm1Not reportedNot reportedNot reported
Ubuntudnsdistdebpro1.8.3-2ubuntu0.1~esm1Not reportedUSN-8037-1Not reported
Ubuntudnsdistdeb25.101.9.10-1ubuntu0.1Not reportedUSN-8037-1Not reported
Susednsdistrpmlinux enterprise server 16.01.9.11-160000.1.1Not reportedSUSE-SU-2026:20995-1Not reported
Susednsdistrpmlinux enterprise server for sap applications 16.01.9.11-160000.1.1Not reportedSUSE-SU-2026:20995-1Not reported
Opensusednsdistrpmleap 16.01.9.11-160000.1.1Not reportedOPENSUSE-SU-2026:20461-1Not reported
Susednsdistrpmlinux enterprise module for basesystem 15 sp71.9.11-150700.3.6.1Not reportedSUSE-SU-2026:0888-1Not reported
Ubuntudnsdistdeb25.101.9.10-1ubuntu0.1Not reportedUBUNTU-CVE-2025-30187Not reported

[Debian bug #1115643]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [dnsdist]Not affected
    Details (2)

    • 1.7.3-2 · amd64 · bookworm

      Not affected

      usn · dnsdist · debian · bookworm

    • 1.7.3-2 · arm64 · bookworm

      Not affected

      usn · dnsdist · debian · bookworm

[Debian 13 (Trixie)]

  • [dnsdist]Fixed
    Details (4)

    • 1.9.15-0+deb13u1 · amd64 · trixie

      Fixed · Fixed: 1.9.10-1+deb13u1

      usn · dnsdist · debian · 13

    • 1.9.15-0+deb13u1 · arm64 · trixie

      Fixed · Fixed: 1.9.10-1+deb13u1

      usn · dnsdist · debian · 13

    • 1.9.16-0+deb13u1 · amd64 · trixie-security

      Fixed · Fixed: 1.9.10-1+deb13u1

      usn · dnsdist · debian · 13

    • 1.9.16-0+deb13u1 · arm64 · trixie-security

      Fixed · Fixed: 1.9.10-1+deb13u1

      usn · dnsdist · debian · 13

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]