CVE-2011-4086

CVE Details

Release Date:	2012-07-03
Impact:	Moderate	What is this?

Description

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.

See more information about CVE-2011-4086 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	4.9
Vector String:	AV:L/AC:L/Au:N/C:N/I:N/A:C
Version:	2.0
Attack Vector:	Local
Attack Complexity:	Low
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Complete

Errata information

Platform	Errata	Release Date
Oracle Linux version 5 (kernel)	ELSA-2012-0107	2012-02-09
Oracle Linux version 5 (kernel-uek)	ELSA-2012-2013	2012-05-16
Oracle Linux version 5 (kernel-uek)	ELSA-2012-2014	2012-05-16
Oracle Linux version 5 (mlnx_en-2.6.32-300.25.1.el5uek)	ELSA-2012-2014	2012-05-16
Oracle Linux version 5 (ocfs2-2.6.18-274.18.1.0.1.el5)	ELSA-2012-0107	2012-02-09
Oracle Linux version 5 (ofa-2.6.32-300.25.1.el5uek)	ELSA-2012-2014	2012-05-16
Oracle Linux version 5 (oracleasm-2.6.18-274.18.1.0.1.el5)	ELSA-2012-0107	2012-02-09
Oracle Linux version 6 (kernel)	ELSA-2012-0571	2012-05-15
Oracle Linux version 6 (kernel-uek)	ELSA-2012-2013	2012-05-16
Oracle Linux version 6 (kernel-uek)	ELSA-2012-2014	2012-05-16
Oracle Linux version 6 (mlnx_en-2.6.32-300.25.1.el6uek)	ELSA-2012-2014	2012-05-16
Oracle Linux version 6 (ofa-2.6.32-300.25.1.el6uek)	ELSA-2012-2014	2012-05-16