libavformat/rtpdec_h261.c:124: error: Integer Overflow L2
  ([0, min(7, `*buf`)] - [0, 64]):unsigned32 by call to `bitstream_skip`.

libavformat/rtpdec_h261.c:47:1: Parameter `rtp_h261_ctx->endbyte_bits`
45. }
46. 
47. static int h261_handle_packet(AVFormatContext *ctx, PayloadContext *rtp_h261_ctx,
    ^
48.                               AVStream *st, AVPacket *pkt, uint32_t *timestamp,
49.                               const uint8_t *buf, int len, uint16_t seq,

libavformat/rtpdec_h261.c:124:13: Call
122.             BitstreamContext bc;
123.             bitstream_init(&bc, buf, len * 8 - ebit);
124.             bitstream_skip(&bc, sbit);
                 ^
125.             if (rtp_h261_ctx->endbyte_bits) {
126.                 rtp_h261_ctx->endbyte |= bitstream_read(&bc, 8 - rtp_h261_ctx->endbyte_bits);

libavcodec/bitstream.h:240:1: <LHS trace>
238. 
239. /* Skip n bits in the buffer. */
240. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
     ^
241. {
242.     if (n < bc->bits_left)

libavcodec/bitstream.h:240:1: Parameter `n`
  238. 
  239. /* Skip n bits in the buffer. */
  240. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
       ^
  241. {
  242.     if (n < bc->bits_left)

libavcodec/bitstream.h:240:1: <RHS trace>
238. 
239. /* Skip n bits in the buffer. */
240. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
     ^
241. {
242.     if (n < bc->bits_left)

libavcodec/bitstream.h:240:1: Parameter `n`
  238. 
  239. /* Skip n bits in the buffer. */
  240. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
       ^
  241. {
  242.     if (n < bc->bits_left)

libavcodec/bitstream.h:245:9: Binary operation: ([0, min(7, *buf)] - [0, 64]):unsigned32 by call to `bitstream_skip` 
  243.         skip_remaining(bc, n);
  244.     else {
  245.         n -= bc->bits_left;
               ^
  246.         bc->bits      = 0;
  247.         bc->bits_left = 0;
