CVE-2014-8481 Null dereference in n/a

Medium 4.9 Published Updated

Guest OS users can crash the host system via a crafted application due to a NULL pointer dereference in the KVM instruction decoder.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2014-8481?

CVE-2014-8481 is a medium-severity vulnerability in Linux kernel, published on 10 Nov 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-399

Which versions are affected by CVE-2014-8481?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2014-8481?

No fix has been published for CVE-2014-8481 yet. Limit exposure of the affected software until one is available.

Is CVE-2014-8481 being exploited?

There is no known exploitation of CVE-2014-8481 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as GHSA-2m72-x5wj-734p.

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