CVE-2012-2100

Impact:
Low
Public Date:
2012-01-10
Bugzilla:
809687: CVE-2012-2100 kernel: ext4: fix inconsistency in ext4_fill_flex_info()

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2012-2100 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise MRG 2.

CVSS v2 metrics

Base Score 4
Base Metrics AV:L/AC:H/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity High
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 5 (kernel) RHSA-2012:1445 2012-11-13
Red Hat Enterprise Linux 6 (kernel) RHSA-2012:1580 2012-12-18

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Will not fix
Red Hat Enterprise Linux 4 kernel Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.
Last Modified

CVE description copyright © 2017, The MITRE Corporation