Description
Null Pointer Dereference in mask_cidr6 component at cidr.c in Tcpreplay 4.4.4 allows attackers to crash the application via crafted tcprewrite command.
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 | tcpreplay | 4.5.1-1 | — |
| Debian 13 | tcpreplay | 4.5.1-1 | — |
| Debian 12 | tcpreplay | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | tcpreplay | 4.4.4-1ubuntu0.1~esm1 | USN-7231-1 |
| Ubuntu Pro 22.04 LTS | tcpreplay | 4.3.4-1ubuntu0.1~esm2 | USN-7231-1 |
| Ubuntu Pro 20.04 LTS | tcpreplay | 4.3.2-1ubuntu0.1~esm3 | USN-7231-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | tcpreplay | 4.2.6-1ubuntu0.1~esm5 | USN-7231-1 |
| Ubuntu Pro 16.04 LTS | tcpreplay | 3.4.4-2+deb8u1ubuntu0.1~esm3 | USN-7231-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | tcpreplay | 4.5.2-bp160.1.1 | openSUSE-SU-2025:20119-1 |
Advisories 2
- USN-7231-1 tcpreplay vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- openSUSE-SU-2025:20119-1 Security update for tcpreplay SUSE / openSUSE Security Updates · Mar 23, 2026
References
- https://github.com/appneta/tcpreplay/issues/824
- FEDORA-2024-96903c39cb vendor-advisory
- FEDORA-2024-ec1fba69c2 vendor-advisory
- FEDORA-2024-b3b2a95168 vendor-advisory