CVE-2014-8481

The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.

CVSS v2.0 4.9 MEDIUM

4.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32	Exploit
http://www.openwall.com/lists/oss-security/2014/10/23/7	Exploit
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a430c9166312e1aa3d80bce32374233bdbfeba32	Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=1156615
http://secunia.com/advisories/62042

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:rc1:*:*:*:*:*:*

Information

Published : 2014-11-10 03:55

Updated : 2015-11-20 08:08

NVD link : CVE-2014-8481

Mitre link : CVE-2014-8481

JSON object : View

CWE

CWE-399

Resource Management Errors

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Products Affected

linux

linux_kernel

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