drm: vmwgfx_surface.c: copy user-array safely
authorPhilipp Stanner <pstanner@redhat.com>
Wed, 20 Sep 2023 12:36:13 +0000 (14:36 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 28 Nov 2023 17:19:40 +0000 (17:19 +0000)
commit21e29f1437b7c36c76efa908589578eaf0f50900
tree470865d98fe0500dbf9abbcfbe063a3997ca4a47
parentea42bc330723644a0bd01d7124a601ab60b27747
drm: vmwgfx_surface.c: copy user-array safely

[ Upstream commit 06ab64a0d836ac430c5f94669710a78aa43942cb ]

Currently, there is no overflow-check with memdup_user().

Use the new function memdup_array_user() instead of memdup_user() for
duplicating the user-space array safely.

Suggested-by: David Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920123612.16914-7-pstanner@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c