CVE-2009-4307

Linux Kernel < 2.6.32 - Denial of Service via Malformed ext4 Filesystem

Title source: llm
STIX 2.1

Description

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

References (12)

Core 12
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2010-0380.html
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/38276
Various Sources mailing-list x_refsource_mlist
http://lkml.org/lkml/2009/12/9/255
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874
Exploit, Patch x_refsource_confirm
http://bugzilla.kernel.org/show_bug.cgi?id=14287
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/37658
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/38017

Scores

EPSS 0.0343
EPSS Percentile 87.8%

Details

CWE
CWE-189
Status published
Products (50)
linux/linux_kernel 2.6.0
linux/linux_kernel 2.6.1
linux/linux_kernel 2.6.2
linux/linux_kernel 2.6.3
linux/linux_kernel 2.6.4
linux/linux_kernel 2.6.5
linux/linux_kernel 2.6.6
linux/linux_kernel 2.6.7
linux/linux_kernel 2.6.8
linux/linux_kernel 2.6.8.1
... and 40 more
Published Dec 13, 2009
Tracked Since Feb 18, 2026