PT-2014-8407 · Linux+5 · Linux Kernel+5

Sasha Levin

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Published

2014-10-13

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Updated

2020-08-14

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CVE-2014-8086

CVSS v3.1

4.7

Medium

VectorAV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.18
Description A race condition exists in the ext4 file write iter function, allowing local users to cause a denial of service by making a file unavailable. This can be achieved through a combination of a write action and an F SETFL fcntl operation for the O DIRECT flag.
Recommendations For Linux kernel versions prior to 3.18, consider upgrading to version 3.18 or later to resolve the issue. As a temporary workaround, consider restricting the use of the O DIRECT flag to minimize the risk of exploitation.

Exploit

Fix

DoS

Race Condition

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Weakness Enumeration

CWE-362

Related Identifiers

ALT-PU-2014-2297
ALT-PU-2015-1794
CESA-2015_0290
CVE-2014-8086
RHSA-2015:0290
RHSA-2015:0694
RHSA-2015_0290
SUSE-RU-2015:0621-1
SUSE-SU-2015:0581-1
SUSE-SU-2015:0736-1
SUSE-SU-2015:1071-1
SUSE-SU-2015:1174-1
SUSE-SU-2015:1376-1
SUSE-SU-2015:1478-1
SUSE-SU-2015_1174-1
USN-2447-1
USN-2447-2
USN-2448-1

Affected Products

Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu