Description
The ext4_decode_error function in fs/ext4/super.c in the ext4 filesystem in the Linux kernel before 2.6.32 allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference), and possibly have unspecified other impact, via a crafted read-only filesystem that lacks a journal.
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 4.0 | linux-2.6.24 | 2.6.24-6~etchnhalf.9etch3 | DSA-2005-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +12 | 2.6.18-164.15.1.el5 | RHSA-2010:0147 |
Advisories 2
- RHSA-2010:0147 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-2005-1 linux-2.6.24 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 38276 third-party-advisory
- RHSA-2010:0147 vendor-advisory
- MDVSA-2010:198 vendor-advisory
- SUSE-SA:2010:001 vendor-advisory
- SUSE-SA:2010:012 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=78f1ddbb498283c2445c11b0dfa666424c301803
- 43315 third-party-advisory
- oval:org.mitre.oval:def:11103 vdb-entry signature
- 37658 third-party-advisory
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html
- SUSE-SA:2010:005 vendor-advisory
- DSA-2005 vendor-advisory
- 20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX mailing-list
- 38017 third-party-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32