CVE-2014-1438
kernel: x86: exceptions are not cleared in AMD FXSAVE workaround
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · December 30, 2013
Updated · November 21, 2025
Description
The restore_fpu_checking function in arch/x86/include/asm/fpu-internal.h in the Linux kernel before 3.12.8 on the AMD K7 and K8 platforms does not clear pending exceptions before proceeding to an EMMS instruction, which allows local users to cause a denial of service (task kill) or possibly gain privileges via a crafted application.
Statement
This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 4.7AV:L/AC:M/Au:N/C:N/I:N/A:C
CWE not specified