diff options
| author | Li Qiang <liq3ea@gmail.com> | 2017-03-27 20:10:53 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-12 12:41:11 +0200 |
| commit | 4ddd24d54fedff301e8f020d7b9f70116383af31 (patch) | |
| tree | e2b270ba3bb73e377a58a2702eb7a5551a16f8ea /fs | |
| parent | 28c84df739e3ac2bdb7898d6b5f92aa72330a423 (diff) | |
| download | linux-stable-4ddd24d54fedff301e8f020d7b9f70116383af31.tar.gz linux-stable-4ddd24d54fedff301e8f020d7b9f70116383af31.tar.bz2 linux-stable-4ddd24d54fedff301e8f020d7b9f70116383af31.zip | |
drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()
commit e7e11f99564222d82f0ce84bd521e57d78a6b678 upstream.
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.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions