CVE-2009-4307

N/A Unknown
Published: December 13, 2009 Modified: April 23, 2026
View on NVD

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).

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://bugzilla.kernel.org/show_bug.cgi?id=14287
Source: cve@mitre.org
Exploit Patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271c
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
Source: cve@mitre.org
http://lkml.org/lkml/2009/12/9/255
Source: cve@mitre.org
http://secunia.com/advisories/37658
Source: cve@mitre.org
Vendor Advisory
http://secunia.com/advisories/38017
Source: cve@mitre.org
http://secunia.com/advisories/38276
Source: cve@mitre.org
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
Source: cve@mitre.org
Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
Source: cve@mitre.org
http://www.redhat.com/support/errata/RHSA-2010-0380.html
Source: cve@mitre.org
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874
Source: cve@mitre.org
http://bugzilla.kernel.org/show_bug.cgi?id=14287
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271c
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html
Source: af854a3a-2127-422b-91ae-364da2661108
http://lkml.org/lkml/2009/12/9/255
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/37658
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/38017
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/38276
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.redhat.com/support/errata/RHSA-2010-0380.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874
Source: af854a3a-2127-422b-91ae-364da2661108

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
3.4%
87th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-189

Affected Vendors

linux

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