CVE-2016-5412 Denial of service in n/a

Medium 6.5 Published Updated

Guest OS users can cause a host OS infinite loop and denial of service via a specific hypercall on PowerPC platforms with KVM enabled.

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-2016-5412?

CVE-2016-5412 is a medium-severity denial of service vulnerability in Linux kernel, published on 6 Aug 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

arch/powerpc/kvm/book3s_hv_rmhandlers.S in the Linux kernel through 4.7 on PowerPC platforms, when CONFIG_KVM_BOOK3S_64_HV is enabled, allows guest OS users to cause a denial of service (host OS infinite loop) by making a H_CEDE hypercall during the existence of a suspended transaction.

Weakness: CWE-399

Which versions are affected by CVE-2016-5412?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2016-5412?

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-2016-5412 being exploited?

There is no known exploitation of CVE-2016-5412 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-5412, GHSA-ccw5-jvc3-prf4, UBUNTU-CVE-2016-5412.

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