CVE-2020-6072: Debian Linux

Critical severity, CVSS 9.8. EPSS: 3.8% chance of exploitation in the next 30 days.

An exploitable code execution vulnerability exists in the label-parsing functionality of Videolabs libmicrodns 0.1.0. When parsing compressed labels in mDNS messages, the rr_decode function's return value is not checked, leading to a double free that could be exploited to execute arbitrary code. An attacker can send an mDNS message to trigger this vulnerability.

Affected products

  • Debian Debian Linux: version 9.0 only
  • Videolabs Libmicrodns: version 0.1.0 only

Published 2020-03-24. Last modified 2026-10-08.