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Last updated: 5/31/2016 4:56:21 PM

CVE Publication rate: 19.57

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Vulnerability Workload Index: 12.29
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National Cyber Awareness System

Vulnerability Summary for CVE-2014-1438

Original release date: 01/18/2014
Last revised: 03/16/2014


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.7 MEDIUM
Impact Subscore: 6.9
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: https://github.com/torvalds/linux/commit/26bef1318adc1b3a530ecc807ef99346db2aa8b0
External Source: UBUNTU
Name: USN-2141-1
External Source: UBUNTU
Name: USN-2113-1
External Source: UBUNTU
Name: USN-2139-1
External Source: UBUNTU
Name: USN-2117-1
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8
External Source: UBUNTU
Name: USN-2135-1
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=1052914
External Source: MANDRIVA
Name: MDVSA-2014:038
External Source: UBUNTU
Name: USN-2138-1
External Source: BID
Name: 64781
External Source: FEDORA
Name: FEDORA-2014-1072
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=26bef1318adc1b3a530ecc807ef99346db2aa8b0
Type: Patch Information; Exploit
External Source: UBUNTU
Name: USN-2136-1
External Source: UBUNTU
Name: USN-2134-1
External Source: UBUNTU
Name: USN-2133-1
External Source: MLIST
Name: [oss-security] 20140114 Re: Linux kernel: missing CPU-state sanitation during task-switch causes DOS / privilege escalation
External Source: FEDORA
Name: FEDORA-2014-1062
External Source: SECTRACK
Name: 1029592
External Source: MISC
Name: http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/
External Source: MLIST
Name: [linux-kernel] 20140110 Re: Sanitize CPU-state when switching tasks (was sanitize CPU-state when switching from virtual-8086 mode to other task)

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)