The isis_print function, as called by isoclns_print, in tcpdump 3.9.1 and earlier allows remote attackers to cause a denial of service (infinite loop) via a zero length, as demonstrated using a GRE packet.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade tcpdump | Jul 30, 2024 | May 2, 2005 |
| Freebsd | — | Upgrade FreeBSDUpgrade tcpdump | Dec 10, 2025 | Jun 18, 2005 |
| Gentoo Linux | — | Upgrade net-analyzer/tcpdump. | Oct 30, 2017 | May 2, 2005 |
| Suse | — | Upgrade tcpdump | Feb 17, 2015 | May 2, 2005 |
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