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CVE-2025-51006

Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the...

7.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.18%Up 0.2 points since Sep 23, 2025
90%50%10%1%

What each source reports

CVE List Score used 7.8

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.

Record
CVE-2025-51006
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-415
Updated
2026-11-02
EUVDEUVD-2025-30819 7.8

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.

Record
EUVD-2025-30819
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-7rv6-hjpp-g74c 7.8

Within tcpreplay's tcprewrite, a double free vulnerability has been identified in the...

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.

Record
GHSA-7rv6-hjpp-g74c
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-415
Updated
2026-11-02
NVD 7.8

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.

Record
CVE-2025-51006
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-415
Updated
2026-11-06
OSV 7.8

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.

Record
CVE-2025-51006
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-07
OSVDEBIAN-CVE-2025-51006 7.8

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.

Record
DEBIAN-CVE-2025-51006
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2025-51006 7.8

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.

Record
UBUNTU-CVE-2025-51006
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2025:15728-1 No score

tcpreplay-4.5.2-1.1 on GA media

These are all security issues fixed in the tcpreplay-4.5.2-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15728-1
Updated
2026-11-02
OSVopenSUSE-SU-2025:20119-1 No score

Security update for tcpreplay

This update for tcpreplay fixes the following issues:

  • update to 4.5.2:
    • features added since 4.4.4
      • fix/recalculate header checksum for ipv6-frag
      • IPv6 frag checksum support
      • AF_XDP socket support
      • tcpreplay -w (write into a pcap file)
      • tcpreplay --fixhdrlen
      • --include and --exclude options
      • SLL2 support
      • Haiku support
    • security fixes reported for 4.4.4 fixed in 4.5.2
      • CVE-2023-4256 / bsc#1218249
      • CVE-2023-43279 / bsc#1221324
      • CVE-2024-3024 / bsc#1222131 (likely)
      • CVE-2024-22654 / bsc#1243845
      • CVE-2025-9157 / bsc#1248322
      • CVE-2025-9384 / bsc#1248595
      • CVE-2025-9385 / bsc#1248596
      • CVE-2025-9386 / bsc#1248597
      • CVE-2025-9649 / bsc#1248964
      • CVE-2025-51006 / bsc#1250356
Record
openSUSE-SU-2025:20119-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tcpreplay
Debian:12
 All versions, plus listed versions
4.4.3-14.4.4-14.5.1-14.5.2-14.5.3-14.5.4-1
 None known
tcpreplay
Debian:13
 All versions, plus listed versions
4.5.1-14.5.2-14.5.3-14.5.4-1
 None known
tcpreplay
Debian:14
 before 4.5.2-1, plus listed versions
4.5.1-1
4.5.2-1
tcpreplay
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
3.4.4-23.4.4-2+deb8u1build0.16.04.13.4.4-2+deb8u1ubuntu0.1~esm13.4.4-2+deb8u1ubuntu0.1~esm23.4.4-2+deb8u1ubuntu0.1~esm3
 None known
tcpreplay
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
4.2.6-14.2.6-1ubuntu0.1~esm14.2.6-1ubuntu0.1~esm24.2.6-1ubuntu0.1~esm34.2.6-1ubuntu0.1~esm44.2.6-1ubuntu0.1~esm5
 None known
tcpreplay
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
4.3.2-1build14.3.2-1ubuntu0.1~esm14.3.2-1ubuntu0.1~esm24.3.2-1ubuntu0.1~esm3
 None known
tcpreplay
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
4.3.3-24.3.4-14.3.4-1ubuntu0.1~esm14.3.4-1ubuntu0.1~esm2
 None known
tcpreplay
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
4.4.3-14.4.4-14.4.4-1build14.4.4-1build24.4.4-1ubuntu0.1~esm1
 None known
tcpreplay
Ubuntu:25.10
 All versions, plus listed versions
4.5.1-14.5.2-1
 None known
tcpreplay
Ubuntu:26.10
 All versions, plus listed versions
4.5.2-1build14.5.4-1
 None known
tcpreplay
Ubuntu:26.04:LTS
 All versions, plus listed versions
4.5.2-14.5.2-1build1
 None known
tcpreplay
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 4.5.2-1.1
4.5.2-1.1
tcpreplay
openSUSE:Leap 16.0
From an advisory covering 11 CVEs
 before 4.5.2-bp160.1.1
4.5.2-bp160.1.1

History

History
RecordedChangedSources
affected
factsNVD
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-51006 is a high vulnerability (CVSS 7.8) in Broadcom Tcpreplay, published September 22, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 8th percentile. Fixed in tcpreplay 4.5.2-1.

References

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