Published: 21 November 2008
The inotify functionality in Linux kernel 2.6 before 2.6.28-rc5 might allow local users to gain privileges via unknown vectors related to race conditions in inotify watch removal and umount.
From the Ubuntu security team
It was discovered that the inotify subsystem contained watch removal race conditions. A local attacker could exploit this to crash the system, leading to a denial of service.