Input validation error in OpenBSD - CVE-2016-6246
Published: March 7, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU39571
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2016-6246
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: OpenBSD
Affected software:
OpenBSD
OpenBSD
Detailed vulnerability description
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
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.
How to mitigate CVE-2016-6246
Install update from vendor's website.