tree 4d01d5801047b466c44c40231773e66a9dfb704d
parent c916874d60d9daf2e2d5f4f622b185ef57deb6a4
author Xi Wang <xi.wang@gmail.com> 1322028721 -0500
committer Dave Airlie <airlied@redhat.com> 1322038768 +0000

drm: integer overflow in drm_mode_dirtyfb_ioctl()

There is a potential integer overflow in drm_mode_dirtyfb_ioctl()
if userspace passes in a large num_clips.  The call to kmalloc would
allocate a small buffer, and the call to fb->funcs->dirty may result
in a memory corruption.

Reported-by: Haogang Chen <haogangchen@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>