CVE-2014-1438

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.

Category

4.7
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com Vendor Advisory mandriva.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.ubuntu.com/usn/USN-2135-1 vendor advisory
http://www.ubuntu.com/usn/USN-2138-1 vendor advisory
http://www.ubuntu.com/usn/USN-2113-1 vendor advisory
http://www.ubuntu.com/usn/USN-2141-1 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1052914
http://www.openwall.com/lists/oss-security/2014/01/14/1 mailing list
http://www.ubuntu.com/usn/USN-2136-1 vendor advisory
http://www.securityfocus.com/bid/64781 vdb entry
http://www.ubuntu.com/usn/USN-2139-1 vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126874.html vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=26bef1318adc1b3a530ecc807ef99346db2aa8b0
http://www.ubuntu.com/usn/USN-2134-1 vendor advisory
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.12.8
http://www.mandriva.com/security/advisories?name=MDVSA-2014:038 vendor advisory
http://www.ubuntu.com/usn/USN-2117-1 vendor advisory
https://github.com/torvalds/linux/commit/26bef1318adc1b3a530ecc807ef99346db2aa8b0
http://www.ubuntu.com/usn/USN-2133-1 vendor advisory
http://www.securitytracker.com/id/1029592 vdb entry
http://lists.fedoraproject.org/pipermail/package-announce/2014-January/126858.html vendor advisory
https://lkml.org/lkml/2014/1/9/637 mailing list
http://www.halfdog.net/Security/2013/Vm86SyscallTaskSwitchKernelPanic/

Frequently Asked Questions

What is the severity of CVE-2014-1438?
CVE-2014-1438 has been scored as a medium severity vulnerability.
How to fix CVE-2014-1438?
To fix CVE-2014-1438, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2014-1438 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2014-1438 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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