Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 3.12.7 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126858.ht
- http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126874.ht
- http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:038
- http://www.openwall.com/lists/oss-security/2014/01/14/1
- http://www.securityfocus.com/bid/64781
- http://www.securitytracker.com/id/1029592
- http://www.ubuntu.com/usn/USN-2113-1
- http://www.ubuntu.com/usn/USN-2117-1
- http://www.ubuntu.com/usn/USN-2133-1
- http://www.ubuntu.com/usn/USN-2134-1
- http://www.ubuntu.com/usn/USN-2135-1
- http://www.ubuntu.com/usn/USN-2136-1
FAQ
What is CVE-2014-1438?
CVE-2014-1438 is a vulnerability with a CVSS score of 4.7 (MEDIUM). 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...
How severe is CVE-2014-1438?
CVE-2014-1438 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-1438?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.