CVE-2017-17997: Debian Linux

High severity, CVSS 7.5. EPSS: 1.8% chance of exploitation in the next 30 days.

In Wireshark before 2.2.12, the MRDISC dissector misuses a NULL pointer and crashes. This was addressed in epan/dissectors/packet-mrdisc.c by validating an IPv4 address. This vulnerability is similar to CVE-2017-9343.

Affected products

• Debian Debian Linux: version 8.0 only
• Wireshark Wireshark: up to and including 2.2.11

Published 2017-12-30. Last modified 2026-06-17.