Description
tcpdump 4.9.0 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via crafted packet data. The crash occurs in the EXTRACT_16BITS function, called from the stp_print function for the Spanning Tree Protocol.
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 | 4.9.1-1 | — |
| Debian 13 | tcpdump | 4.9.1-1 | — |
| Debian 12 | tcpdump | 4.9.1-1 | — |
| Debian 9 | tcpdump | 4.9.2-1~deb9u1 | DSA-3971-1 |
| Debian 8 | tcpdump | 4.9.2-1~deb8u1 | DSA-3971-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | tcpdump | 4.9.0-1~deb7u2 | DLA-1090-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | tcpdump | 4.9.2-0ubuntu0.16.04.1 | USN-3415-1 |
| Ubuntu 14.04 LTS | tcpdump | 4.9.2-0ubuntu0.14.04.1 | USN-3415-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | tcpdump | 14:4.9.2-3.el7 | RHEA-2018:0705 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | tcpdump | 4.9.2-14.5.1 | SUSE-SU-2017:2854-1 |
| SLES 12 SP2 | tcpdump | 4.9.2-14.5.1 | SUSE-SU-2017:2854-1 |
| SLES 11 SP4 | tcpdump | 3.9.8-1.30.5.1 | SUSE-SU-2017:2690-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | tcpdump | 4.9.2-14.5.1 | SUSE-SU-2017:2854-1 |
| SLES for SAP 12 SP2 | tcpdump | 4.9.2-14.5.1 | SUSE-SU-2017:2854-1 |
| SLES for SAP 11 SP4 | tcpdump | 3.9.8-1.30.5.1 | SUSE-SU-2017:2690-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tcpdump | 4.99.1-1.2 | openSUSE-SU-2024:11425-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.23 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.22 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.21 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.20 | tcpdump | 4.9.1-r0 | — |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.18 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.17 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.16 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.15 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.14 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.13 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.12 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.11 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.10 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.9 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.8 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.7 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.6 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.5 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.4 | tcpdump | 4.9.1-r0 | — |
| Alpine v3.3 | tcpdump | 4.9.1-r0 | — |
Advisories 10
- RHEA-2018:0705 Red Hat Enhancement Advisory: tcpdump bug fix and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-3971-1 tcpdump - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1090-1 tcpdump - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3415-1 tcpdump vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:2854-1 Security update for tcpdump SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2690-1 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
- VDE-2019-009 PHOENIX CONTACT: Multiple Vulnerabilities in AXC F 2152 CERT@VDE · May 22, 2025
- WID-SEC-2025-0370 Apple Mac OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 13, 2025
- ICSA-19-155-01 PHOENIX CONTACT PLCNext AXC F 2152 CISA ICS & IT advisories · Jun 4, 2019
References
- GLSA-201709-23 vendor-advisory
- https://support.apple.com/HT208221
- DSA-3971 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1468504
- RHEA-2018:0705 vendor-advisory