]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
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 16:56:16 +0000 (16:56 +0000)
commit689b33b94f096e717cd8f140a8b5502e7e4fe759
tree2524beec0a3b2bff684aa2bf20bc4fe41350f42e
parent22260dabcfe30ab70440d91aa1e4a703d13925c4
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