CVE Database

CVE-2014-1438

Impact: Moderate
Public: 2013-12-30
Bugzilla: 1052914: CVE-2014-1438 kernel: x86: exceptions are not cleared in AMD FXSAVE workaround

Details

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2014-1438 from the MITRE CVE dictionary and NIST NVD.

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 v2 metrics

Base Score: 4.7
Base Metrics: AV:L/AC:M/Au:N/C:N/I:N/A:C
Access Vector: Local
Access Complexity: Medium
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2014:0439 April 28, 2014

External References

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For clarification or corrections please contact the Red Hat Security Response Team.