CVE-2017-7261 Null dereference in n/a
Local attackers can cause a denial of service via a crafted ioctl call due to a missing zero-value check in the vmwgfx driver.
- 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-2017-7261?
CVE-2017-7261 is a medium-severity vulnerability in Linux kernel, published on 24 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.10.5 does not check for a zero value of certain levels data, which allows local users to cause a denial of service (ZERO_SIZE_PTR dereference, and GPF and possibly panic) via a crafted ioctl call for a /dev/dri/renderD* device.
Weakness: CWE-20
Which versions are affected by CVE-2017-7261?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2017-7261?
Apply the vendor's patch.
Is CVE-2017-7261 being exploited?
There is no known exploitation of CVE-2017-7261 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2017-7261, GHSA-vx6p-wh5p-qj6v, UBUNTU-CVE-2017-7261.