CVE-2016-7907 Denial of service in n/a
Local guest administrators can crash the QEMU process via an infinite loop in the imx_fec network driver, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-7907?
CVE-2016-7907 is a medium-severity denial of service vulnerability in Qemu Qemu, published on 5 Oct 2016. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The imx_fec_do_tx function in hw/net/imx_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.
Which versions are affected by CVE-2016-7907?
It affects 1 product.
Products include Qemu Qemu.
How do I fix CVE-2016-7907?
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-2016-7907 being exploited?
There is no known exploitation of CVE-2016-7907 in the wild and no public exploit code.
Other vulnerabilities in Qemu Qemu
Sources
Also known as DEBIAN-CVE-2016-7907, GHSA-9mcc-p2hp-9p52, UBUNTU-CVE-2016-7907.