It was discovered that aufs improperly managed inode reference counts in the
vfsub_dentry_open() method. A local attacker could use this vulnerability to
cause a denial of service attack.

Mauricio Faria de Oliveira discovered that the aufs implementation in the
Linux kernel improperly managed inode reference counts in the
vfsub_dentry_open() method. A local attacker could use this vulnerability
to cause a denial of service.

sbeattie

upstream aufs4-linux.git commits: 515a586eeef31e0717d5dea21e2c11a965340b3c f10aea57d39d6cd311312e9e7746804f7059b5c8