CVE-2016-9932 Information disclosure in n/a

Low 3.3 Published 26 Jan 2017 Updated 6 Aug 2024

Local HVM guest users can read sensitive host stack memory via a flaw in CMPXCHG8B emulation, requiring hypervisor patches.

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-2016-9932?

CVE-2016-9932 is a low-severity vulnerability in Xen Xen, published on 26 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix.

Weakness: CWE-200

Which versions are affected by CVE-2016-9932?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2016-9932?

Apply the vendor's patch.

Is CVE-2016-9932 being exploited?

There is no known exploitation of CVE-2016-9932 in the wild and no public exploit code.

All Xen Xen vulnerabilities

Sources

Also known as ALPINE-CVE-2016-9932, DEBIAN-CVE-2016-9932, GHSA-888m-xr85-xxqp, UBUNTU-CVE-2016-9932.