PT-2014-4181 · Linux+2 · Linux Kernel+2

Borislav Petkov

·

Published

2014-01-16

·

Updated

2014-05-19

·

CVE-2014-1438

CVSS v2.0

4.7

Medium

VectorAV:L/AC:M/Au:N/C:N/I:N/A:C
Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 3.12.8
Description The issue is related to the restore fpu checking function in the Linux kernel, which does not properly clear pending exceptions before executing an EMMS instruction on AMD K7 and K8 platforms. This can be exploited by local users to cause a denial of service or potentially gain privileges through a crafted application.
Recommendations For Linux kernel versions prior to 3.12.8, update to version 3.12.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the restore fpu checking function to minimize the risk of exploitation.

Exploit

Fix

DoS

Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com

Weakness Enumeration

CWE-264

Related Identifiers

ALT-PU-2014-1065
ALT-PU-2014-1422
ALT-PU-2014-1547
CVE-2014-1438
DLA-0007-1
MGASA-2014-0038
MGASA-2014-0043
MGASA-2014-0044
MGASA-2014-0045
MGASA-2014-0055
MGASA-2014-0064
OPENSUSE-SU-2014_0677-1
OPENSUSE-SU-2014_0678-1
RHSA-2014:0439
USN-2113-1
USN-2117-1
USN-2133-1
USN-2134-1
USN-2135-1
USN-2136-1
USN-2138-1
USN-2139-1
USN-2141-1
USN-2233-1
USN-2234-1

Affected Products

Alt Linux
Linux Kernel
Suse