| commit | a014741c0adfb8fb79952939ca087cf03d272bb9 | [log] [tgz] |
|---|---|---|
| author | Vasiliy Kulikov <segooon@gmail.com> | Mon Nov 08 14:42:40 2010 +0100 |
| committer | Jens Axboe <jaxboe@fusionio.com> | Wed Nov 10 14:40:53 2010 +0100 |
| tree | 57bafa05736f172b94fde156bb51798b3ddb6107 | |
| parent | 77304d2abac6101f7249754ffdd4421258877ab0 [diff] |
block: ioctl: fix information leak to userland Structure hd_geometry is copied to userland with 4 padding bytes between cylinders and start fields uninitialized on 64-bit platforms. It leads to leaking of contents of kernel stack memory. Currently there is no memset() in real implementations of getgeo() in drivers/block/, so it makes sense to have memset() in blkdev_ioctl(). Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>