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Vulnerability Intelligence

Vulnerability IntelligenceCVE-2009-4307

CVE-2009-4307

UNKNOWN

The ext4_fill_flex_info function in fs/ext4/super

Published Dec 13, 2009

Modified 1 years ago

Details

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

http://bugzilla.kernel.org/show_bug.cgi?id=14287

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271c

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00005.html

http://lkml.org/lkml/2009/12/9/255

http://secunia.com/advisories/37658

http://secunia.com/advisories/38017

http://secunia.com/advisories/38276

http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log

http://www.mandriva.com/security/advisories?name=MDVSA-2011:029

http://www.redhat.com/support/errata/RHSA-2010-0380.html

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874

https://www.cve.org/CVERecord?id=CVE-2009-4307

CVSS Analysis

CVSS v2.0

7.1

Exploitability

Access Vector

NetworkAV:N

Access Complexity

MediumAC:M

Authentication

NoneAu:N

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

CompleteA:C

7.1/AV:N/AC:M/Au:N/C:N/I:N/A:C

Ecosystems

Timeline

PublishedDec 13, 2009

ModifiedAug 7, 2024

CVE-2009-4307 | Mondoo Vulnerability Intelligence