UnratedRed Hat & Ubuntu Linux

ldns vulnerability

USN-8449-1 Published Jun 18, 2026

CVE-2026-10846

Affected products & platforms

Red Hat & Ubuntu LinuxUnclassified

Summary

Pablo Ruiz discovered that ldns did not properly validate DNS responses when used as a stub resolver over UDP. A remote attacker could possibly use this issue to inject arbitrary DNS responses. Affected Ubuntu releases: 26.04, 24.04, 22.04, 20.04, 18.04, 16.04. CVEs: CVE-2026-10846.

Affected versions

Ubuntu 26.04
Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

Official advisory · medium-confidence parse· fetched 4 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Apply available updates: `sudo apt update && sudo apt upgrade` (a standard system update installs the fix).

Official advisory · medium-confidence parse· fetched 4 hours ago·verify at source

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