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mpegvideo_parser: fix buffer access beyond end

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Wolfram Gloger 2012-12-05 19:26:12 +01:00 committed by Michael Niedermayer
parent 58df8befda
commit 928346091a
1 changed files with 1 additions and 0 deletions
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libavcodec/mpegvideo_parser.c
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@ -56,6 +56,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
case PICTURE_START_CODE: case PICTURE_START_CODE:
if (bytes_left >= 2) { if (bytes_left >= 2) {
s->pict_type = (buf[1] >> 3) & 7; s->pict_type = (buf[1] >> 3) & 7;
if (bytes_left >= 4)
vbv_delay = ((buf[1] & 0x07) << 13) | (buf[2] << 5) | (buf[3] >> 3); vbv_delay = ((buf[1] & 0x07) << 13) | (buf[2] << 5) | (buf[3] >> 3);
} }
break; break;