CVE-2025-51006: broadcom tcpreplay Double Free
Vulnerability summary
CVE-2025-51006 is a high (CVSS 7.8) Double Free vulnerability in broadcom tcpreplay. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.5% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 22-09-2025PublishedVulnerability first disclosed.
- 22-09-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
0.00 pp
From 0.18% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundTcpreplay
Maturity: poc
Cve 2025 51006
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Broadcom1 product
- tcpreplay4.5.1
Debian1 product
- tcpreplayAll versions (No fix recorded) | < 4.5.2-1
Ubuntu1 product
- tcpreplayAll versions (No fix recorded)
3 vendors · 3 products
