CVE-2017-8063 Denial of service in n/a
Local users can cause a system crash in the Linux kernel by exploiting a DMA scatterlist issue when CONFIG_VMAP_STACK is 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-2017-8063?
CVE-2017-8063 is a high-severity denial of service vulnerability in Linux kernel, published on 23 Apr 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
drivers/media/usb/dvb-usb/cxusb.c in the Linux kernel 4.9.x and 4.10.x before 4.10.12 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact by leveraging use of more than one virtual page for a DMA scatterlist.
Weakness: CWE-119
Which versions are affected by CVE-2017-8063?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2017-8063?
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-2017-8063 being exploited?
There is no known exploitation of CVE-2017-8063 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2017-8063, GHSA-9fmr-q4gx-jmc2.