VDB-325227 · CVE-2025-51006 · Nessus 266043

tcpreplay 2.c TCPrewrite linuxsll2.c dlt_linuxsll2_cleanup double free

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3.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in tcpreplay 2.c. It has been rated as problematic. Affected by this issue is the function dlt_linuxsll2_cleanup of the file plugins/dlt_linuxsll2/linuxsll2.c of the component TCPrewrite. Performing a manipulation results in double free. This vulnerability is reported as CVE-2025-51006. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in tcpreplay 2.c. This affects the function dlt_linuxsll2_cleanup of the file plugins/dlt_linuxsll2/linuxsll2.c of the component TCPrewrite. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-51006 since 06/16/2025. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 266043 (Linux Distros Unpatched Vulnerability : CVE-2025-51006), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (266043). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

tcpreplay

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 266043
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-51006

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/16/2025 CVE reserved
09/22/2025 +98 days Advisory disclosed
09/22/2025 +0 days VulDB entry created
09/29/2025 +7 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2025-51006 (🔒)
GCVE (CVE): GCVE-0-2025-51006
GCVE (VulDB): GCVE-100-325227

Entryinfo

Created: 09/22/2025 16:26
Updated: 09/29/2025 11:07
Changes: 09/22/2025 16:26 (54), 09/29/2025 11:07 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.