Skip to content
Commit e7e11f99 authored by Li Qiang's avatar Li Qiang Committed by Thomas Hellstrom
Browse files

drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()



In vmw_surface_define_ioctl(), the 'num_sizes' is the sum of the
'req->mip_levels' array. This array can be assigned any value from
the user space. As both the 'num_sizes' and the array is uint32_t,
it is easy to make 'num_sizes' overflow. The later 'mip_levels' is
used as the loop count. This can lead an oob write. Add the check of
'req->mip_levels' to avoid this.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarLi Qiang <liqiang6-s@360.cn>
Reviewed-by: default avatarThomas Hellstrom <thellstrom@vmware.com>
parent 53e16798
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment