CVE-2010-4210
The pfs_getextattr function in FreeBSD 7.x before 7.3-RELEASE and 8.x before 8.0-RC1 unlocks a mutex that was not previously locked, which allows local users to cause a denial of service (kernel panic), overwrite arbitrary memory locations, and possibly execute arbitrary code via vectors related to opening a file on a file system that uses pseudofs.
Date published : 2010-11-20
https://www.exploit-db.com/exploits/15206/
http://security.FreeBSD.org/advisories/FreeBSD-SA-10:09.pseudofs.asc