CVE-2016-6246 Denial of service in n/a
Local users with mount privileges can crash the OpenBSD kernel by mounting a tmpfs with invalid root node names.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-6246?
CVE-2016-6246 is a medium-severity denial of service vulnerability in Openbsd Openbsd, published on 7 Mar 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OpenBSD 5.8 and 5.9 allows certain local users with kern.usermount privileges to cause a denial of service (kernel panic) by mounting a tmpfs with a VNOVAL in the (1) username, (2) groupname, or (3) device name of the root node.
Weakness: CWE-20
Which versions are affected by CVE-2016-6246?
It affects 1 product.
Products include Openbsd Openbsd.
How do I fix CVE-2016-6246?
No fix has been published for CVE-2016-6246 yet. Limit exposure of the affected software until one is available.
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-2016-6246 being exploited?
There is no known exploitation of CVE-2016-6246 in the wild and no public exploit code.
Other vulnerabilities in Openbsd Openbsd
Sources
Also known as GHSA-6j9v-p9fr-qwq2.