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cve[email protected]CVE-2012-2100
HistoryJul 03, 2012 - 4:40 p.m.

CVE-2012-2100

2012-07-0316:40:32
CWE-189
web.nvd.nist.gov
45
cve-2012-2100
ext4
linux kernel
denial of service
nvd
cve-2009-4307 fix

CVSS2

7.1

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

AI Score

6.1

Confidence

High

EPSS

0.029

Percentile

90.8%

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.

Affected configurations

NVD
Node
linuxlinux_kernelRange3.2.1x86
OR
linuxlinux_kernelMatch3.2x86

CVSS2

7.1

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

AI Score

6.1

Confidence

High

EPSS

0.029

Percentile

90.8%