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avformat/rtsp: Check number of streams in sdp_parse_line() 

Fixes: OOM

Found-by: Michael Hanselmann <public@hansmi.ch>
Reviewed-by: Michael Hanselmann <public@hansmi.ch>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-01-25 21:30:04 +01:00
parent a53c4f3689
commit 497c9b0cce
1 changed files with 4 additions and 1 deletions
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5
libavformat/rtsp.c
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@ -454,7 +454,10 @@ static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
} else if (!strcmp(st_type, "text")) {
codec_type = AVMEDIA_TYPE_SUBTITLE;
}
if (codec_type == AVMEDIA_TYPE_UNKNOWN || !(rt->media_type_mask & (1 << codec_type))) {
if (codec_type == AVMEDIA_TYPE_UNKNOWN ||
!(rt->media_type_mask & (1 << codec_type)) ||
rt->nb_rtsp_streams >= s->max_streams
) {
s1->skip_media = 1;
return;
}