Description
Race condition in the __find_get_block_slow function in the ISO9660 filesystem in Linux 2.6.18 and possibly other versions allows local users to cause a denial of service (infinite loop) by mounting a crafted ISO9660 filesystem containing malformed data structures.
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-2.6.8 | 2.6.8-16sarge7 | DSA-1304-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +8 | 2.6.9-42.0.8.EL | RHSA-2007:0014 |
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.
Exploit-DB 1
- Linux Kernel 2.6.x - 'ISO9660' Denial of Service EDB-28912 · dos · Nov 5, 2006 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- RHSA-2007:0014 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- DSA-1304-1 kernel-source-2.6.8 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- 24098 third-party-advisory
- SUSE-SA:2006:079 vendor-advisory
- 20920 vdb-entry
- kernel-iso9660-dos(30029) vdb-entry
- ADV-2006-4359 vdb-entry
- RHSA-2007:0014 vendor-advisory
- MDKSA-2007:012 vendor-advisory
- 23593 third-party-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm
- USN-416-1 vendor-advisory
- oval:org.mitre.oval:def:10111 vdb-entry signature
- 23752 third-party-advisory
- 24206 third-party-advisory
- 23474 third-party-advisory
- 22746 third-party-advisory
- 23997 third-party-advisory
- 20070615 rPSA-2007-0124-1 kernel xen mailing-list
- MDKSA-2007:002 vendor-advisory
- DSA-1304 vendor-advisory
- 25714 third-party-advisory
- 25691 third-party-advisory
- 22702 third-party-advisory
- http://projects.info-pull.com/mokb/MOKB-05-11-2006.html