diff options
| -rw-r--r-- | libavformat/rmdec.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c index c9abd38d33..7c24b3a12d 100644 --- a/libavformat/rmdec.c +++ b/libavformat/rmdec.c @@ -1174,7 +1174,7 @@ static int ivr_read_header(AVFormatContext *s) uint8_t key[256], val[256]; AVIOContext *pb = s->pb; AVStream *st; - int64_t pos, offset, temp; + int64_t pos, offset=0, temp; pos = avio_tell(pb); tag = avio_rl32(pb); @@ -1191,6 +1191,8 @@ static int ivr_read_header(AVFormatContext *s) offset = temp; temp = avio_rb64(pb); } + if (offset <= 0) + return AVERROR_INVALIDDATA; avio_skip(pb, offset - avio_tell(pb)); if (avio_r8(pb) != 1) return AVERROR_INVALIDDATA; |