Description
tcpdump.org tcpdump 4.9.2 is affected by: CWE-126: Buffer Over-read. The impact is: May expose Saved Frame Pointer, Return Address etc. on stack. The component is: line 234: "ND_PRINT((ndo, "%s", buf));", in function named "print_prefix", in "print-hncp.c". The attack vector is: The victim must open a specially crafted pcap file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| tcpdump.org | tcpdump | 4.9.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tcpdump | No fix yet | — |
| Debian 13 | tcpdump | No fix yet | — |
| Debian 12 | tcpdump | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | tcpdump | 4.9.3-0ubuntu0.18.04.1 | USN-4252-1 |
| Ubuntu 16.04 LTS | tcpdump | 4.9.3-0ubuntu0.16.04.1 | USN-4252-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | tcpdump | 4.9.3-0ubuntu0.14.04.1+esm1 | USN-4252-2 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | tcpdump | 4.9.2-3.6.1 | SUSE-SU-2019:2674-1, SUSE-SU-2019:2087-1 |
| SLES 15 | tcpdump | 4.9.2-3.6.1 | SUSE-SU-2019:2674-1, SUSE-SU-2019:2087-1 |
| SLES 12 SP5 | tcpdump | 4.9.2-14.17.1 | SUSE-SU-2020:3360-1 |
| SLES 12 SP4 | tcpdump | 4.9.2-14.11.1 | SUSE-SU-2019:2088-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | tcpdump | 4.9.2-14.17.1 | SUSE-SU-2020:3360-1 |
| SLES for SAP 12 SP4 | tcpdump | 4.9.2-14.11.1 | SUSE-SU-2019:2088-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tcpdump | 4.99.1-1.2 | openSUSE-SU-2024:11425-1 |
| openSUSE Leap 15.1 | tcpdump | 4.9.2-lp151.4.3.1 | openSUSE-SU-2019:2348-1, openSUSE-SU-2019:1964-1 |
| openSUSE Leap 15.0 | tcpdump | 4.9.2-lp150.10.1 | openSUSE-SU-2019:2344-1, openSUSE-SU-2019:1964-1 |
Advisories 10
- USN-4252-1 tcpdump vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-4252-2 tcpdump vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2020:3360-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1964-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2087-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11425-1 tcpdump-4.99.1-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2348-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2088-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2674-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2344-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9.2/print-hncp.c
- https://github.com/the-tcpdump-group/tcpdump/blob/master/print-hncp.c
- https://github.com/the-tcpdump-group/tcpdump/commits/master/print-hncp.c
- openSUSE-SU-2019:1964 vendor-advisory
- openSUSE-SU-2019:2344 vendor-advisory
- openSUSE-SU-2019:2348 vendor-advisory
- FEDORA-2019-85d92df70f vendor-advisory
- FEDORA-2019-d06bc63433 vendor-advisory
- FEDORA-2019-6db0d5b9d9 vendor-advisory
- USN-4252-2 vendor-advisory
- USN-4252-1 vendor-advisory