Description
Memory leak in the dissection engine in Wireshark 3.4.0 allows denial of service via packet injection or crafted capture file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| The Wireshark Foundation | Wireshark | 3.4.0 | — |
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 | 3.4.1-1 | — |
| Debian 13 | wireshark | 3.4.1-1 | — |
| Debian 12 | wireshark | 3.4.1-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLES 15 SP3 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SLES 15 SP2 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLES 15 SP2 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SLES 15 SP1 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SLES 15 SP1 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLES 15 SP1 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SLES 15 | libvirt | 4.0.0-9.37.21 | SUSE-SU-2021:2125-1 |
| SLES 15 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLES 15 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SLES for SAP 15 SP1 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLES for SAP 15 SP1 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SLES for SAP 15 | libvirt | 4.0.0-9.37.21 | SUSE-SU-2021:2125-1 |
| SLES for SAP 15 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLES for SAP 15 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SLE HPC 15 SP1 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SLE HPC 15 SP1 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLE HPC 15 SP1 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SLE HPC 15 | libvirt | 4.0.0-9.37.21 | SUSE-SU-2021:2125-1 |
| SLE HPC 15 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SLE HPC 15 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Server 4.0 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Server 4.0 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Server 4.0 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Retail Branch Server 4.0 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Retail Branch Server 4.0 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Retail Branch Server 4.0 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Proxy 4.0 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Proxy 4.0 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Manager Proxy 4.0 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
| SUSE Enterprise Storage 6 | libqt5-qtmultimedia | 5.9.7-7.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Enterprise Storage 6 | sbc | 1.3-3.2.1 | SUSE-SU-2021:2125-1 |
| SUSE Enterprise Storage 6 | wireshark | 3.4.5-3.53.1 | SUSE-SU-2021:2125-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wireshark | 3.4.8-1.2 | openSUSE-SU-2024:11513-1 |
| openSUSE Leap 15.3 | sbc | 1.3-3.2.1 | openSUSE-SU-2021:2125-1 |
| openSUSE Leap 15.3 | wireshark | 3.4.5-3.53.1 | openSUSE-SU-2021:2125-1 |
| openSUSE Leap 15.2 | wireshark | 3.4.5-lp152.2.12.1 | openSUSE-SU-2021:0909-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | wireshark | 3.4.1-r0 | — |
| Alpine v3.23 | wireshark | 3.4.1-r0 | — |
| Alpine v3.22 | wireshark | 3.4.1-r0 | — |
| Alpine v3.21 | wireshark | 3.4.1-r0 | — |
| Alpine v3.20 | wireshark | 3.4.1-r0 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | wireshark | 3.4.1-r0 | — |
| Alpine v3.18 | wireshark | 3.4.1-r0 | — |
| Alpine v3.17 | wireshark | 3.4.1-r0 | — |
| Alpine v3.16 | wireshark | 3.4.1-r0 | — |
| Alpine v3.15 | wireshark | 3.4.1-r0 | — |
| Alpine v3.14 | wireshark | 3.4.1-r0 | — |
| Alpine v3.13 | wireshark | 3.4.1-r0 | — |
Advisories 5
- openSUSE-SU-2021:2125-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0909-1 Security update for wireshark, libvirt, sbc, libqt5-qtmultimedia SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11513-1 libwireshark14-3.4.8-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2125-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-2184 Wireshark: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 18, 2024
References
- https://www.wireshark.org/security/wnpa-sec-2020-19.html
- https://gitlab.com/wireshark/wireshark/-/issues/17032
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26419.json
- GLSA-202101-12 vendor-advisory
- FEDORA-2021-f3011da665 vendor-advisory
- FEDORA-2021-138674557c vendor-advisory
- https://www.oracle.com/security-alerts/cpuApr2021.html