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Last updated: 10/22/2014 2:22:44 AM

CVE Publication rate: 54.6

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Vulnerability Workload Index: 15.27
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National Cyber Awareness System

Vulnerability Summary for CVE-2011-4086

Original release date: 07/03/2012
Last revised: 02/14/2013
Source: US-CERT/NIST

Overview

The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.9 (MEDIUM) (AV:L/AC:L/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3
Type: Patch Information
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1
External Source: SECUNIA
Name: 48964
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=15291164b22a357cb211b618adfef4fa82fc0de3
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=749143
External Source: SECUNIA
Name: 48898

Vulnerable software and versions

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* cpe:/o:linux:linux_kernel:3.3 and previous versions
* cpe:/o:linux:linux_kernel:3.2.12
* cpe:/o:linux:linux_kernel:3.2.13
* cpe:/o:linux:linux_kernel:3.2.14
* cpe:/o:linux:linux_kernel:3.2.15
* cpe:/o:linux:linux_kernel:3.2.16
* cpe:/o:linux:linux_kernel:3.2.17
* cpe:/o:linux:linux_kernel:3.2.18
* cpe:/o:linux:linux_kernel:3.2.19
* cpe:/o:linux:linux_kernel:3.2.20
* cpe:/o:linux:linux_kernel:3.2.1
* cpe:/o:linux:linux_kernel:3.2.5
* cpe:/o:linux:linux_kernel:3.2.4
* cpe:/o:linux:linux_kernel:3.2.3
* cpe:/o:linux:linux_kernel:3.2.2
* cpe:/o:linux:linux_kernel:3.2:rc7
* cpe:/o:linux:linux_kernel:3.2:rc6
* cpe:/o:linux:linux_kernel:3.2:rc3
* cpe:/o:linux:linux_kernel:3.2:rc2
* cpe:/o:linux:linux_kernel:3.2:rc5
* cpe:/o:linux:linux_kernel:3.2:rc4
* cpe:/o:linux:linux_kernel:3.2.6
* cpe:/o:linux:linux_kernel:3.2.7
* cpe:/o:linux:linux_kernel:3.2.8
* cpe:/o:linux:linux_kernel:3.2.9
* cpe:/o:linux:linux_kernel:3.2.10
* cpe:/o:linux:linux_kernel:3.2.11
* cpe:/o:linux:linux_kernel:3.2
* cpe:/o:linux:linux_kernel:3.1:rc1
* cpe:/o:linux:linux_kernel:3.1:rc2
* cpe:/o:linux:linux_kernel:3.1:rc3
* cpe:/o:linux:linux_kernel:3.1:rc4
* cpe:/o:linux:linux_kernel:3.1
* cpe:/o:linux:linux_kernel:3.1.10
* cpe:/o:linux:linux_kernel:3.1.9
* cpe:/o:linux:linux_kernel:3.1.8
* cpe:/o:linux:linux_kernel:3.1.7
* cpe:/o:linux:linux_kernel:3.1.6
* cpe:/o:linux:linux_kernel:3.1.5
* cpe:/o:linux:linux_kernel:3.1.4
* cpe:/o:linux:linux_kernel:3.1.3
* cpe:/o:linux:linux_kernel:3.1.2
* cpe:/o:linux:linux_kernel:3.1.1
* cpe:/o:linux:linux_kernel:3.0:rc7
* cpe:/o:linux:linux_kernel:3.0:rc4
* cpe:/o:linux:linux_kernel:3.0:rc5
* cpe:/o:linux:linux_kernel:3.0:rc6
* cpe:/o:linux:linux_kernel:3.0:rc1
* cpe:/o:linux:linux_kernel:3.0:rc2
* cpe:/o:linux:linux_kernel:3.0:rc3
* cpe:/o:linux:linux_kernel:3.0.24
* cpe:/o:linux:linux_kernel:3.0.22
* cpe:/o:linux:linux_kernel:3.0.23
* cpe:/o:linux:linux_kernel:3.0.20
* cpe:/o:linux:linux_kernel:3.0.21
* cpe:/o:linux:linux_kernel:3.0.18
* cpe:/o:linux:linux_kernel:3.0.19
* cpe:/o:linux:linux_kernel:3.0.16
* cpe:/o:linux:linux_kernel:3.0.17
* cpe:/o:linux:linux_kernel:3.0.14
* cpe:/o:linux:linux_kernel:3.0.15
* cpe:/o:linux:linux_kernel:3.0.12
* cpe:/o:linux:linux_kernel:3.0.13
* cpe:/o:linux:linux_kernel:3.0.10
* cpe:/o:linux:linux_kernel:3.0.11
* cpe:/o:linux:linux_kernel:3.0.27
* cpe:/o:linux:linux_kernel:3.0.26
* cpe:/o:linux:linux_kernel:3.0.25
* cpe:/o:linux:linux_kernel:3.0.4
* cpe:/o:linux:linux_kernel:3.0.3
* cpe:/o:linux:linux_kernel:3.0.2
* cpe:/o:linux:linux_kernel:3.0.1
* cpe:/o:linux:linux_kernel:3.0.34
* cpe:/o:linux:linux_kernel:3.0.5
* cpe:/o:linux:linux_kernel:3.0.32
* cpe:/o:linux:linux_kernel:3.0.33
* cpe:/o:linux:linux_kernel:3.0.7
* cpe:/o:linux:linux_kernel:3.0.30
* cpe:/o:linux:linux_kernel:3.0.6
* cpe:/o:linux:linux_kernel:3.0.31
* cpe:/o:linux:linux_kernel:3.0.9
* cpe:/o:linux:linux_kernel:3.0.28
* cpe:/o:linux:linux_kernel:3.0.8
* cpe:/o:linux:linux_kernel:3.0.29
* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

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