CVE-2021-4184: Debian Linux

High severity, CVSS 7.5. EPSS: 3.8% chance of exploitation in the next 30 days.

Infinite loop in the BitTorrent DHT dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file

Affected products

• Debian Debian Linux: version 9.0 only
• Fedoraproject Fedora: version 34 only; version 35 only
• Oracle HTTP Server: version 12.2.1.3.0 only; version 12.2.1.4.0 only
• Oracle ZFS Storage Appliance Kit: version 8.8 only
• Wireshark Wireshark: from 3.4.0, up to and including 3.4.10; version 3.6.0 only

Published 2021-12-30. Last modified 2026-06-17.