CVE-2025-51006 Use after free in n/a
A local attacker can cause a denial of service via memory corruption by providing a crafted pcap file to tcprewrite.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-51006?
CVE-2025-51006 is a high-severity use after free vulnerability in Broadcom Tcpreplay, published on 22 Sep 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the dlt_linuxsll2_cleanup() function in plugins/dlt_linuxsll2/linuxsll2.c. This vulnerability is triggered when tcpedit_dlt_cleanup() indirectly invokes the cleanup routine multiple times on the same memory region. By supplying a specifically crafted pcap file to the tcprewrite binary, a local attacker can exploit this flaw to cause a Denial of Service (DoS) via memory corruption.
Weakness: CWE-415
Which versions are affected by CVE-2025-51006?
It affects 1 product.
Products include Broadcom Tcpreplay.
How do I fix CVE-2025-51006?
No fix published yet.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-51006 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51006 exists.
Other vulnerabilities in Broadcom Tcpreplay
Sources
Also known as DEBIAN-CVE-2025-51006, GHSA-7rv6-hjpp-g74c, UBUNTU-CVE-2025-51006.