libavcodec/vb.c:215: error: Integer Overflow L2
  ([min(0, `avpkt->data->l`), max(0, `avpkt->data->l`)] - 4):unsigned32.

libavcodec/vb.c:187:1: <LHS trace>
185. }
186. 
187. static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     ^
188.                         AVPacket *avpkt)
189. {

libavcodec/vb.c:187:1: Parameter `avpkt->data->l`
185. }
186. 
187. static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     ^
188.                         AVPacket *avpkt)
189. {

libavcodec/vb.c:213:16: Call
211.     }
212.     if (flags & VB_HAS_VIDEO) {
213.         size = bytestream2_get_le32(&c->stream);
                    ^
214.         vb_decode_framedata(c, offset);
215.         bytestream2_skip(&c->stream, size - 4);

libavcodec/bytestream.h:85:1: Assignment
  83. 
  84. DEF(uint64_t,     le64, 8, AV_RL64, AV_WL64)
  85. DEF(unsigned int, le32, 4, AV_RL32, AV_WL32)
      ^
  86. DEF(unsigned int, le24, 3, AV_RL24, AV_WL24)
  87. DEF(unsigned int, le16, 2, AV_RL16, AV_WL16)

libavcodec/vb.c:213:9: Assignment
211.     }
212.     if (flags & VB_HAS_VIDEO) {
213.         size = bytestream2_get_le32(&c->stream);
             ^
214.         vb_decode_framedata(c, offset);
215.         bytestream2_skip(&c->stream, size - 4);

libavcodec/vb.c:215:9: Binary operation: ([min(0, avpkt->data->l), max(0, avpkt->data->l)] - 4):unsigned32
213.         size = bytestream2_get_le32(&c->stream);
214.         vb_decode_framedata(c, offset);
215.         bytestream2_skip(&c->stream, size - 4);
             ^
216.     }
217.     if (flags & VB_HAS_PALETTE) {
