The eCryptfs subsystem in the Linux kernel before 3.18 allows local users to gain privileges via a large filesystem stack that includes an overlayfs layer, related to fs/ecryptfs/main.c and fs/overlayfs/super.c.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 3.17.8.x |
| google / android | - | 7.1.1.x |