1 files changed, 4 insertions, 1 deletions
diff --git a/media/ffvpx/libavcodec/vp56rac.c b/media/ffvpx/libavcodec/vp56rac.c
index 6061b7ee7..e70302bf8 100644
--- a/media/ffvpx/libavcodec/vp56rac.c
+++ b/media/ffvpx/libavcodec/vp56rac.c
@@ -37,11 +37,14 @@ const uint8_t ff_vp56_norm_shift[256]= {
  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 };
 
-void ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size)
+int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size)
 {
     c->high = 255;
     c->bits = -16;
     c->buffer = buf;
     c->end = buf + buf_size;
+    if (buf_size < 1)
+        return AVERROR_INVALIDDATA;
     c->code_word = bytestream_get_be24(&c->buffer);
+    return 0;
 }