matroska: fix a corner case in ebml-lace parsing

Make sure we notice when the lace_size[n] is a negative value. CC: libav-stable@libav.org
12 years ago · 8a96df7b70
parent fc43c19a56
commit 8a96df7b70
1 changed files with 1 additions and 1 deletions
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@ -1820,7 +1820,7 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf,

    case 0x3: /* EBML lacing */ {
        uint64_t num;
-        uint32_t total;
+        uint64_t total;
        n = matroska_ebmlnum_uint(matroska, data, size, &num);
        if (n < 0) {
            av_log(matroska->ctx, AV_LOG_INFO,