CVE-2016-9776 Denial of service in n/a

Medium 5.5 Published Updated

A privileged guest user can crash the QEMU host process via an infinite loop in the ColdFire Fast Ethernet Controller emulator, causing denial of service.

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-2016-9776?

CVE-2016-9776 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 29 Dec 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

QEMU (aka Quick Emulator) built with the ColdFire Fast Ethernet Controller emulator support is vulnerable to an infinite loop issue. It could occur while receiving packets in 'mcf_fec_receive'. A privileged user/process inside guest could use this issue to crash the QEMU process on the host leading to DoS.

Weakness: CWE-835

Which versions are affected by CVE-2016-9776?

It affects 2 products.

Products include Debian Debian Linux, Qemu Qemu.

How do I fix CVE-2016-9776?

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-2016-9776 being exploited?

There is no known exploitation of CVE-2016-9776 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-9776, GHSA-52m2-jxvj-qw6r, UBUNTU-CVE-2016-9776.

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