The do_write_pids function in lxcfs.c in LXCFS before 0.12 does not properly check permissions, which allows local users to gain privileges by writing a pid to the tasks file.
| Software | From | Fixed in |
|---|---|---|
| canonical / ubuntu_linux | 15.10 | 15.10.x |
| canonical / ubuntu_linux | 15.04 | 15.04.x |
| canonical / lxcfs | - | 0.11.x |