CVE-2015-5307 Denial of service in n/a

Medium 4.9 Published Updated

A guest OS user can cause a host OS panic or hang by triggering many Alignment Check exceptions in the KVM subsystem.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2015-5307?

CVE-2015-5307 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 16 Nov 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c.

Weakness: CWE-399

Which versions are affected by CVE-2015-5307?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Oracle Vm Virtualbox, Xen Xen.

How do I fix CVE-2015-5307?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-5307 being exploited?

There is no known exploitation of CVE-2015-5307 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-5307, GHSA-hfhj-gfxm-5x7g, UBUNTU-CVE-2015-5307, USN-2801-1, USN-2805-1, USN-2806-1 and 1 more.

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