X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2F4xm.c;h=2758b69d2981488f5e1230e6d248c1d9f9a86461;hb=ecd360041ea7f206e42736f046a3ecb9984e0763;hp=8a50778686f871f3142d32118b407fdb0840496b;hpb=85146dfc23d39caf0167158cee2b6786a2616fff;p=ffmpeg

diff --git a/libavformat/4xm.c b/libavformat/4xm.c
index 8a50778686f..2758b69d298 100644
--- a/libavformat/4xm.c
+++ b/libavformat/4xm.c
@@ -163,6 +163,12 @@ static int parse_strk(AVFormatContext *s,
         return AVERROR_INVALIDDATA;
     }
 
+    if (fourxm->tracks[track].sample_rate > INT64_MAX / fourxm->tracks[track].bits / fourxm->tracks[track].channels) {
+        av_log(s, AV_LOG_ERROR, "Overflow during bit rate calculation %d * %d * %d\n",
+               fourxm->tracks[track].sample_rate, fourxm->tracks[track].bits, fourxm->tracks[track].channels);
+        return AVERROR_INVALIDDATA;
+    }
+
     /* allocate a new AVStream */
     st = avformat_new_stream(s, NULL);
     if (!st)
@@ -178,7 +184,7 @@ static int parse_strk(AVFormatContext *s,
     st->codecpar->channels              = fourxm->tracks[track].channels;
     st->codecpar->sample_rate           = fourxm->tracks[track].sample_rate;
     st->codecpar->bits_per_coded_sample = fourxm->tracks[track].bits;
-    st->codecpar->bit_rate              = st->codecpar->channels *
+    st->codecpar->bit_rate              = (int64_t)st->codecpar->channels *
                                           st->codecpar->sample_rate *
                                           st->codecpar->bits_per_coded_sample;
     st->codecpar->block_align           = st->codecpar->channels *