diff options
| author | Zack Rusin <zackr@vmware.com> | 2022-10-25 23:19:35 -0400 |
|---|---|---|
| committer | Zack Rusin <zackr@vmware.com> | 2022-10-31 11:50:23 -0400 |
| commit | 4cf949c7fafe21e085a4ee386bb2dade9067316e (patch) | |
| tree | 934fb69424571c5eebf770ebe2efd4e24f9e4da2 /drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | |
| parent | 4dba27f1a14592ac4cf71c3bc1cc1fd05dea8015 (diff) | |
drm/vmwgfx: Validate the box size for the snooped cursor
Invalid userspace dma surface copies could potentially overflow
the memcpy from the surface to the snooped image leading to crashes.
To fix it the dimensions of the copybox have to be validated
against the expected size of the snooped cursor.
Signed-off-by: Zack Rusin <zackr@vmware.com>
Fixes: 2ac863719e51 ("vmwgfx: Snoop DMA transfers with non-covering sizes")
Cc: <stable@vger.kernel.org> # v3.2+
Reviewed-by: Michael Banack <banackm@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221026031936.1004280-1-zack@kde.org
Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c')
0 files changed, 0 insertions, 0 deletions