diff options
| -rw-r--r-- | libavformat/matroskadec.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 8c4ff30935..1d3745ab4d 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -3280,15 +3280,16 @@ static int matroska_parse_prores(MatroskaTrack *track, uint8_t *src, int dstlen = *size; if (AV_RB32(&src[4]) != MKBETAG('i', 'c', 'p', 'f')) { - dst = av_malloc(dstlen + 8 + AV_INPUT_BUFFER_PADDING_SIZE); + dstlen += 8; + + dst = av_malloc(dstlen + AV_INPUT_BUFFER_PADDING_SIZE); if (!dst) return AVERROR(ENOMEM); AV_WB32(dst, dstlen); AV_WB32(dst + 4, MKBETAG('i', 'c', 'p', 'f')); - memcpy(dst + 8, src, dstlen); - memset(dst + 8 + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE); - dstlen += 8; + memcpy(dst + 8, src, dstlen - 8); + memset(dst + dstlen, 0, AV_INPUT_BUFFER_PADDING_SIZE); } *pdst = dst; |