CVE-2021-39921
Fixed in a distro release EPSS 3%CVSS 7.5
NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
Products: Wireshark Foundation Wireshark
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 11 | wireshark | 3.4.10-0+deb11u1 |
| Debian 12 | wireshark | 3.6.0-1 |
| Debian 13 | wireshark | 3.6.0-1 |
| Debian 14 | wireshark | 3.6.0-1 |
| Debian 9 | wireshark | 2.6.20-0+deb9u2 |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | wireshark | 3.4.10-3.62.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | wireshark | 3.4.10-3.62.1 |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP2 | wireshark | 3.4.10-3.62.1 |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP3 | wireshark | 3.4.10-3.62.1 |
| Ubuntu 24.04 LTS | wireshark | no fix |
| Ubuntu 25.10 | wireshark | no fix |
| Ubuntu 26.04 LTS | wireshark | no fix |
| Ubuntu 26.10 | wireshark | no fix |
| Ubuntu Pro 14.04 LTS | wireshark | no fix |
| Ubuntu Pro 16.04 LTS | wireshark | no fix |
| Ubuntu Pro 18.04 LTS | wireshark | no fix |
| Ubuntu Pro 20.04 LTS | wireshark | no fix |
| Ubuntu Pro 22.04 LTS | wireshark | no fix |
| openSUSE Leap 15.2 | wireshark | 3.4.10-lp152.2.21.1 |
| openSUSE Leap 15.3 | wireshark | 3.4.10-3.62.1 |
| openSUSE Tumbleweed | wireshark | 3.4.10-1.1 |