Description
In Wireshark through 3.2.7, the Facebook Zero Protocol (aka FBZERO) dissector could enter an infinite loop. This was addressed in epan/dissectors/packet-fbzero.c by correcting the implementation of offset advancement.
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 | 3.2.8-0.1 | — |
| Debian 13 | wireshark | 3.2.8-0.1 | — |
| Debian 12 | wireshark | 3.2.8-0.1 | — |
| Debian 9 | wireshark | 2.6.20-0+deb9u1 | DLA-2547-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 18.04 LTS | wireshark | No fix yet | — |
| Ubuntu Pro 16.04 LTS | wireshark | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | wireshark | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | wireshark | 3.2.8-3.44.1 | SUSE-SU-2020:3376-1 |
| SLES 15 SP1 | wireshark | 3.2.8-3.44.1 | SUSE-SU-2020:3376-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wireshark | 3.4.8-1.2 | openSUSE-SU-2024:11513-1 |
| openSUSE Leap 15.2 | wireshark | 3.2.8-lp152.2.9.1 | openSUSE-SU-2020:2076-1 |
| openSUSE Leap 15.1 | wireshark | 3.2.8-lp151.2.18.1 | openSUSE-SU-2020:2107-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | wireshark | 3.4.0-r0 | — |
| Alpine v3.23 | wireshark | 3.4.0-r0 | — |
| Alpine v3.22 | wireshark | 3.4.0-r0 | — |
| Alpine v3.21 | wireshark | 3.4.0-r0 | — |
| Alpine v3.20 | wireshark | 3.4.0-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | wireshark | 3.4.0-r0 | — |
| Alpine v3.18 | wireshark | 3.4.0-r0 | — |
| Alpine v3.17 | wireshark | 3.4.0-r0 | — |
| Alpine v3.16 | wireshark | 3.4.0-r0 | — |
| Alpine v3.15 | wireshark | 3.4.0-r0 | — |
| Alpine v3.14 | wireshark | 3.4.0-r0 | — |
| Alpine v3.13 | wireshark | 3.4.0-r0 | — |
| Alpine v3.12 | wireshark | 3.2.8-r0 | — |
Advisories 5
- DLA-2547-1 wireshark - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2020:3376-1 Security update for wireshark 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
- openSUSE-SU-2020:2076-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2107-1 Security update for wireshark SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://gitlab.com/wireshark/wireshark/-/issues/16887
- https://gitlab.com/wireshark/wireshark/-/merge_requests/467
- https://gitlab.com/wireshark/wireshark/-/merge_requests/471
- https://gitlab.com/wireshark/wireshark/-/merge_requests/472
- https://gitlab.com/wireshark/wireshark/-/merge_requests/473
- https://gitlab.com/wireshark/wireshark/-/commit/3ff940652962c099b73ae3233322b8697b0d10ab
- GLSA-202011-08 vendor-advisory
- FEDORA-2020-4cff262f07 vendor-advisory
- FEDORA-2020-d4344dd12f vendor-advisory
- https://www.oracle.com/security-alerts/cpujan2021.html
- https://www.wireshark.org/security/wnpa-sec-2020-14.html
- [debian-lts-announce] 20210206 [SECURITY] [DLA 2547-1] wireshark security update mailing-list