CVE-2020-27638: Debian Linux

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.

Affected products

• Debian Debian Linux: version 9.0 only
• Fastd Project Fastd: before 21.0 (fixed in 21.0)
• Fedoraproject Fedora: version 31 only; version 32 only; version 33 only

Published 2020-10-22. Last modified 2026-06-17.