drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()

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commit 36274ab8c5 upstream.

Before memory allocations vmw_surface_define_ioctl() checks the
upper-bounds of a user-supplied size, but does not check if the
supplied size is 0.

Add check to avoid NULL pointer dereferences.

Signed-off-by: Murray McAllister <murray.mcallister@insomniasec.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Murray McAllister 2017-03-27 11:12:53 +02:00 • committed by Greg Kroah-Hartman

parent 92cc48166e

commit 73ab72517b

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/vmwgfx/vmwgfx_surface.c

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