tcpreplay: Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function...
CVE-2023-4256 is fixed in tcpreplay on 1 platform, first by DEBIAN-CVE-2023-4256, released December 21, 2023. It is not reported as exploited. Patch Radar priority: Routine.
Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the tcpedit_dlt_cleanup() function within plugins/dlt_plugins.c. This vulnerability can be exploited by supplying a specifically crafted file to the tcprewrite binary. This flaw enables a local attacker to initiate a Denial of Service (DoS) attack.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| tcpreplay · Debian 13.5 (trixie) | 4.5.1-1 | DEBIAN-CVE-2023-4256 | Dec 21, 2023 |
| tcpreplay · Debian 14 | 4.5.1-1 | DEBIAN-CVE-2023-4256 | Dec 21, 2023 |
| tcpreplay · Ubuntu 18.04.6 LTS (bionic) | 4.2.6-1ubuntu0.1~esm5 | tcpreplay 4.2.6-1ubuntu0.1~esm5 | Mar 12, 2024 |
| tcpreplay · Ubuntu 20.04 LTS (focal) | 4.3.2-1ubuntu0.1~esm3 | tcpreplay 4.3.2-1ubuntu0.1~esm3 | Mar 12, 2024 |
| tcpreplay · Ubuntu 22.04.1 LTS (jammy) | 4.3.4-1ubuntu0.1~esm2 | tcpreplay 4.3.4-1ubuntu0.1~esm2 | Mar 12, 2024 |
| tcpreplay · Ubuntu 24.04.5 LTS (noble) | 4.4.4-1ubuntu0.1~esm1 | tcpreplay 4.4.4-1ubuntu0.1~esm1 | Mar 12, 2024 |
| tcpreplay · opensuse-leap 16.0 | 4.5.2-bp160.1.1 | OPENSUSE-SU-2025:20119-1 | Nov 27, 2025 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.