Description
Linux kernel 2.6.x up to 2.6.18 and possibly other versions, when SELinux hooks are enabled, allows local users to cause a denial of service (crash) via a malformed file stream that triggers a NULL pointer dereference in the superblock_doinit function, as demonstrated using an HFS filesystem image.
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 |
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
- MDKSA-2007:078 vendor-advisory
- RHSA-2007:0014 vendor-advisory
- 24777 third-party-advisory
- oval:org.mitre.oval:def:9949 vdb-entry signature
- http://support.avaya.com/elmodocs2/security/ASA-2007-063.htm
- USN-416-1 vendor-advisory
- 22887 third-party-advisory
- 24206 third-party-advisory
- 23474 third-party-advisory
- 23997 third-party-advisory
- 20070615 rPSA-2007-0124-1 kernel xen mailing-list
- http://projects.info-pull.com/mokb/MOKB-14-11-2006.html
- 24482 third-party-advisory
- linux-superblockdoinit-dos(30278) vdb-entry
- DSA-1304 vendor-advisory
- 25714 third-party-advisory
- 25691 third-party-advisory
- MDKSA-2007:060 vendor-advisory