Description
The BGP decoding routines in tcpdump 3.6.x before 3.7 do not properly copy data, which allows remote attackers to cause a denial of service (application crash).
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 | 3.7.2-1 | — |
| Debian 13 | tcpdump | 3.7.2-1 | — |
| Debian 12 | tcpdump | 3.7.2-1 | — |
| Debian 3.0 | tcpdump | 3.6.2-2.2 | DSA-206 |
Advisories 1
- DSA-206 tcpdump - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- tcpdump-sizeof-memory-corruption(10695) vdb-entry
- [tcpdump-workers] 20011015 Bug in print-bgp.c? mailing-list
- RHSA-2003:033 vendor-advisory
- MDKSA-2003:027 vendor-advisory
- RHSA-2003:214 vendor-advisory
- 20021219 TSLSA-2002-0084 - tcpdump mailing-list
- DSA-206 vendor-advisory
- RHSA-2003:032 vendor-advisory
- 6213 vdb-entry