kbd: Local privilege escalation in openvt via incorrect process owner verification allowing passwordless root login

openvt -u is intended to identify the owner of the current VT and then execute login as that user from a privileged context. In the documented kbrequest/init usage, the ownership test in authenticateuser relies on stat"/proc//fd/0". stat on /proc//fd/0 follows the symlink to the underlying TTY...

kernel: fs: pipe.c null pointer dereference

Multiple race conditions in fs/pipe.c in the Linux kernel before 2.6.32-rc6 allow local users to cause a denial of service NULL pointer dereference and system crash or gain privileges by attempting to open an anonymous pipe via a /proc//fd/ pathname...

Race condition

Multiple race conditions in fs/pipe.c in the Linux kernel before 2.6.32-rc6 allow local users to cause a denial of service NULL pointer dereference and system crash or gain privileges by attempting to open an anonymous pipe via a /proc//fd/ pathname...

CVE-2009-3547

Multiple race conditions in fs/pipe.c in the Linux kernel before 2.6.32-rc6 allow local users to cause a denial of service NULL pointer dereference and system crash or gain privileges by attempting to open an anonymous pipe via a /proc//fd/ pathname...