CVE-2020-25866: Fedoraproject Fedora

High severity, CVSS 7.5. EPSS: 4% chance of exploitation in the next 30 days.

In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has a NULL pointer dereference because a buffer was sized for compressed (not uncompressed) messages. This was addressed in epan/dissectors/packet-blip.c by allowing reasonable compression ratios and rejecting ZIP bombs.

Affected products

• Fedoraproject Fedora: version 31 only; version 32 only; version 33 only
• Opensuse Leap: version 15.1 only; version 15.2 only
• Oracle ZFS Storage Appliance Kit: version 8.8 only
• Wireshark Wireshark: from 3.0.0, up to and including 3.0.13; from 3.2.0, up to and including 3.2.6

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