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CVE-2012-2100

CVE information

Published

11 years ago

Last Modified

5 months ago

CVSSv2.0 Severity

High

Impact Analysis

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Description

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 3.2.2, on the x86 platform and unspecified other platforms, allows user-assisted remote attackers to trigger inconsistent filesystem-groups data and possibly cause a denial of service via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value). NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-4307..

CVSSv2.0 Score

Severity
High
Base Score
7.1/10
Exploit Score
8.6/10
Access Vector
Network
Access Complexity
Medium
Authentication Required
None
Impact Score
6.9/10
Confidentiality Impact
None
Availability Impact
Complete
Integrity Impact
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:x86:*
  Yes
- -
cpe:2.3:o:linux:linux_kernel:3.2:*:*:*:*:*:x86:*
  Yes
- -

References