CVE-2014-1438

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Summary

CVECVE-2014-1438
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-01-18 22:55:03 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 4.7 from [email protected]

AV:L/AC:M/Au:N/C:N/I:N/A:C

EPSS: 0.000440000 probability, percentile 0.133660000 (date 2026-05-03)

Problem Types: CWE-264 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:L/AC:M/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel 3.12 All All All
Operating System Linux Linux Kernel 3.12.1 All All All
Operating System Linux Linux Kernel 3.12.2 All All All
Operating System Linux Linux Kernel 3.12.3 All All All
Operating System Linux Linux Kernel 3.12.4 All All All
Operating System Linux Linux Kernel 3.12.5 All All All
Operating System Linux Linux Kernel 3.12.6 All All All
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
USN-2139-1: Linux kernel (OMAP4) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2135-1: Linux kernel (Quantal HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
Linux Kernel 'fpu-internal.h' Local Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Bug 1052914 – CVE-2014-1438 kernel: x86: exceptions are not cleared in AMD FXSAVE workaround af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
Support / Security / Advisories / / MDVSA-2014:038 | Mandriva af854a3a-2127-422b-91ae-364da2661108 www.mandriva.com
[SECURITY] Fedora 20 Update: kernel-3.12.8-300.fc20 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
LKML: Linus Torvalds: Re: Sanitize CPU-state when switching tasks (was sanitize CPU-state when switching from virtual-8086 mode to other task) af854a3a-2127-422b-91ae-364da2661108 lkml.org
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8 af854a3a-2127-422b-91ae-364da2661108 www.kernel.org
Linux Kernel AMD restore_fpu_checking() Bug Lets Local Users Deny Service or Potentially Obtain Root Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
USN-2113-1: Linux kernel (Saucy HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2136-1: Linux kernel (Raring HWE) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
x86, fpu, amd: Clear exceptions in AMD FXSAVE workaround · torvalds/linux@26bef13 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com
Linux Kernel-Panic in FPU handling on AMD (was ... in vm86 Syscall During Task Switch) af854a3a-2127-422b-91ae-364da2661108 www.halfdog.net
USN-2141-1: Linux kernel (OMAP4) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
oss-security - Re: Linux kernel: missing CPU-state sanitation during task-switch causes DOS / privilege escalation af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
USN-2117-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2138-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
USN-2134-1: Linux kernel (OMAP4) vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
[SECURITY] Fedora 19 Update: kernel-3.12.8-200.fc19 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
USN-2133-1: Linux kernel vulnerabilities | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org
kernel/git/torvalds/linux.git - Linux kernel source tree MITRE git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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