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| author | Vasiliy Kulikov <segooon@gmail.com> | 2010-11-08 16:42:40 +0300 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-11-10 16:40:53 +0300 |
| commit | a014741c0adfb8fb79952939ca087cf03d272bb9 (patch) | |
| tree | 57bafa05736f172b94fde156bb51798b3ddb6107 /security | |
| parent | 77304d2abac6101f7249754ffdd4421258877ab0 (diff) | |
| download | linux-a014741c0adfb8fb79952939ca087cf03d272bb9.tar.xz | |
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>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions