Description
HTTP3 dissector crash in Wireshark 4.2.0 allows denial of service via packet injection or crafted capture file
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wireshark Foundation | Wireshark | 4.2.0 – < 4.2.1 | 4.2.1 |
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 | 4.2.2-1 | — |
| Debian 13 | wireshark | 4.2.2-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | wireshark | 4.2.6-150600.18.6.1 | SUSE-SU-2024:3165-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wireshark | 4.2.1-1.1 | openSUSE-SU-2024:13556-1 |
| openSUSE Leap 15.6 | wireshark | 4.2.6-150600.18.6.1 | SUSE-SU-2024:3165-1 |
Advisories 4
- openSUSE-SU-2024:13556-1 libwireshark17-4.2.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3165-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-1248 Xerox FreeFlow Print Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 21, 2024
- WID-SEC-2024-0007 Wireshark: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Sep 29, 2024