CVE catalog
CVE-2025-51006
tcpreplay: CVE-2025-51006
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.18% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | tcpreplay | sid | 4.5.4-1 | fixed |
| Debian | tcpreplay | forky | 4.5.4-1 | fixed |
| Debian | tcpreplay | trixie | 4.5.1-1 | vulnerable |
| Debian | tcpreplay | bookworm | 4.4.3-1 | vulnerable |
| Opensuse | tcpreplay | tumbleweed | 4.5.2-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tcpreplay | source | sid | 4.5.2-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | forky | 4.5.2-1 | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | trixie | (unfixed) | unimportant | Not reported | Not reported |
| Debian | tcpreplay | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
| Opensuse | tcpreplay | rpm | tumbleweed | 4.5.2-1.1 | Not reported | OPENSUSE-SU-2025:15728-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [tcpreplay]Affected
Details (2)
4.4.3-1· amd64 · bookwormAffected
dsa · tcpreplay · debian · bookworm; dsa · tcpreplay · debian · 12
4.4.3-1· arm64 · bookwormAffected
dsa · tcpreplay · debian · bookworm; dsa · tcpreplay · debian · 12
[Debian 13 (Trixie)]
- [tcpreplay]Affected
Details (2)
4.5.1-1· amd64 · trixieAffected
dsa · tcpreplay · debian · 13
4.5.1-1· arm64 · trixieAffected
dsa · tcpreplay · debian · 13
[openSUSE Tumbleweed]
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2025_15728-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2025-51006]
- [https://osv.dev/vulnerability/openSUSE-SU-2025:15728-1]
- [https://security-tracker.debian.org/tracker/CVE-2025-51006]
- [https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-51006.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]