check stream index validity in av_program_add_stream_index

Originally committed as revision 20319 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · 72017ea1dc
parent 8425cecacc
commit 72017ea1dc
1 changed files with 5 additions and 0 deletions
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@ -2833,6 +2833,11 @@ void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
    AVProgram *program=NULL;
    void *tmp;

+    if (idx >= ac->nb_streams) {
+        av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
+        return;
+    }
+
    for(i=0; i<ac->nb_programs; i++){
        if(ac->programs[i]->id != progid)
            continue;