Real pseudo-RTSP: prevent integer underflow

Pointed-out-by: tixxDZ <tixxdz@gmail.com> - DZCORE Labs, Algeria

diff --git a/modules/access/rtsp/real.c b/modules/access/rtsp/real.c
index ccc7e54a05fe8414a9633b4a5faae578e02c97fd..fdd8dd19725a33847543ef8a0f0724af18c381dd 100644 (file)
--- a/modules/access/rtsp/real.c
+++ b/modules/access/rtsp/real.c
@@ -600,6 +600,7 @@ int real_get_rdt_chunk(rtsp_client_t *rtsp_session, rmff_pheader_t *ph,
 
   int n;
   rmff_dump_pheader(ph, (char*)*buffer);
+  if (pf->length<12) return 0;
   n=rtsp_read_data(rtsp_session, (uint8_t*)(*buffer + 12), ph->length - 12);
   return (n <= 0) ? 0 : n+12;
 }