[Mesa-dev] [PATCH] st/va: Fix potential buffer overread

[Drew Davenport]

VASurfaceAttribExternalBuffers.pitches is indexed by
plane. Current implementation only supports single plane layout.
---
 src/gallium/state_trackers/va/surface.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/state_trackers/va/surface.c b/src/gallium/state_trackers/va/surface.c
index 8604136944..6fe21b89e5 100644
--- a/src/gallium/state_trackers/va/surface.c
+++ b/src/gallium/state_trackers/va/surface.c
@@ -574,7 +574,7 @@ suface_from_external_memory(VADriverContextP ctx, vlVaSurface *surface,
    memset(&whandle, 0, sizeof(struct winsys_handle));
    whandle.type = DRM_API_HANDLE_TYPE_FD;
    whandle.handle = memory_attibute->buffers[index];
-   whandle.stride = memory_attibute->pitches[index];
+   whandle.stride = memory_attibute->pitches[0];
 
    resource = pscreen->resource_from_handle(pscreen, &res_templ, &whandle,
                                             PIPE_HANDLE_USAGE_READ_WRITE);
-- 
2.17.0.441.gb46fe60e1d-goog