Description
The udp_v6_get_port function in udp.c in Linux 2.6 before 2.6.14-rc5, when running IPv6, allows local users to cause a denial of service (infinite loop and 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 3.1 | kernel-source-2.4.27 | 2.4.27-10sarge2 | DSA-1018-1 |
| Debian 3.1 | kernel-source-2.6.8 | 2.6.8-16sarge2 | DSA-1017-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +8 | 2.6.9-34.0.1.EL | RHSA-2006:0493 |
| RHEL 3 | kernel +8 | 2.4.21-37.0.1.EL | RHSA-2006:0140 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Linux Kernel 2.6.x - IPv6 Local Denial of Service EDB-26382 · dos · Oct 20, 2005 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- RHSA-2006:0493 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2006:0140 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1017-1 kernel-source-2.6.8 - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-1018-1 kernel-source-2.4.27 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2006:0140 vendor-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2006-161.htm
- RHSA-2006:0493 vendor-advisory
- 17917 third-party-advisory
- 18684 third-party-advisory
- 17261 third-party-advisory
- https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=170772
- oval:org.mitre.oval:def:10041 vdb-entry signature
- SUSE-SA:2005:067 vendor-advisory
- MDKSA-2006:040 vendor-advisory
- 19369 third-party-advisory
- 21745 third-party-advisory
- DSA-1018 vendor-advisory
- 19185 third-party-advisory
- SUSE-SA:2005:068 vendor-advisory
- FLSA:157459-2 vendor-advisory
- ADV-2005-2173 vdb-entry
- FEDORA-2005-1013 vendor-advisory
- USN-219-1 vendor-advisory
- RHSA-2006:0190 vendor-advisory
- 15156 vdb-entry
- 20163 vdb-entry
- FLSA:157459-1 vendor-advisory
- 17280 third-party-advisory
- FEDORA-2005-1007 vendor-advisory
- MDKSA-2006:072 vendor-advisory
- 17918 third-party-advisory
- FLSA:157459-3 vendor-advisory
- DSA-1017 vendor-advisory
- 20237 third-party-advisory
- http://linux.bkbits.net:8080/linux-2.6/cset%404342df67SNhRx_3FGhUrrU-FXLlQIA
- 19374 third-party-advisory
- RHSA-2006:0191 vendor-advisory
- 18562 third-party-advisory