Description
Large loop in the PNRP 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
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wireshark Foundation | Wireshark | >=3.2.0, <3.2.18, >=3.4.0, <3.4.10 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wireshark | 3.6.0-1 | — |
| Debian 13 | wireshark | 3.6.0-1 | — |
| Debian 12 | wireshark | 3.6.0-1 | — |
| Debian 11 | wireshark | 3.4.10-0+deb11u1 | DSA-5019-1 |
| Debian 9 | wireshark | 2.6.20-0+deb9u2 | DLA-2849-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 20.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 18.04 LTS | wireshark | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 14.04 LTS | wireshark | No fix yet | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | wireshark-cli +1 | 1:4.0.2-1.amzn2023.0.2 | ALAS2023-2023-038 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | wireshark | 3.4.14-1 | — |
Advisories 6
- WID-SEC-2022-0432 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 11, 2026
- WID-SEC-2022-0302 Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten BSI CERT-Bund (WID) · Oct 11, 2026
- DSA-5019-1 wireshark - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2849-1 wireshark - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-1730 Wireshark: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jun 4, 2025
- ALAS2023-2023-038 Moderate: wireshark security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 22, 2023
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json
- https://www.wireshark.org/security/wnpa-sec-2021-11.html
- https://gitlab.com/wireshark/wireshark/-/issues/17684
- DSA-5019 vendor-advisory
- [debian-lts-announce] 20211226 [SECURITY] [DLA 2849-1] wireshark security update mailing-list