CVE-2018-7420: Debian Linux

High severity, CVSS 7.5. EPSS: 2.7% chance of exploitation in the next 30 days.

In Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks.

Affected products

• Debian Debian Linux: version 7.0 only; version 8.0 only
• Wireshark Wireshark: from 2.2.0, up to and including 2.2.12; from 2.4.0, up to and including 2.4.4

Published 2018-02-23. Last modified 2026-06-17.