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-rw-r--r--libavcodec/ac3dec.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c
index 660d8f64d5..76cf1add0e 100644
--- a/libavcodec/ac3dec.c
+++ b/libavcodec/ac3dec.c
@@ -338,6 +338,9 @@ static int ac3_parse_header(AC3DecodeContext *s)
if(err)
return err;
+ if(hdr.bitstream_id > 10)
+ return AC3_PARSE_ERROR_BSID;
+
/* get decoding parameters from header info */
s->bit_alloc_params.sr_code = hdr.sr_code;
s->channel_mode = hdr.channel_mode;