diff options
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/matroskadec.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 396c1de9b8..f53352e990 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -2080,8 +2080,12 @@ static int matroska_read_header(AVFormatContext *s) matroska->cues_parsing_deferred = 1; /* First read the EBML header. */ - if (ebml_parse(matroska, ebml_syntax, &ebml) || - ebml.version > EBML_VERSION || + if (ebml_parse(matroska, ebml_syntax, &ebml) || !ebml.doctype) { + av_log(matroska->ctx, AV_LOG_ERROR, "EBML header parsing failed\n"); + ebml_free(ebml_syntax, &ebml); + return AVERROR_INVALIDDATA; + } + if (ebml.version > EBML_VERSION || ebml.max_size > sizeof(uint64_t) || ebml.id_length > sizeof(uint32_t) || ebml.doctype_version > 3 || |