X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fboadec.c;h=69d17763ef774633501b9b46561919d5403f1979;hb=29f5c1e51b0d156f4650b96ab56c07727fe9a9b7;hp=495090c485e3cb8e1c98991b67c2809e2e085d01;hpb=4d8875ec23cf299277a0f028ea2ac99eb6f603c9;p=ffmpeg

diff --git a/libavformat/boadec.c b/libavformat/boadec.c
index 495090c485e..69d17763ef7 100644
--- a/libavformat/boadec.c
+++ b/libavformat/boadec.c
@@ -54,12 +54,12 @@ static int read_header(AVFormatContext *s)
     avio_rl32(s->pb);
     st->codecpar->sample_rate = avio_rl32(s->pb);
     st->codecpar->channels    = avio_rl32(s->pb);
-    if (st->codecpar->channels > FF_SANE_NB_CHANNELS)
+    if (st->codecpar->channels > FF_SANE_NB_CHANNELS || st->codecpar->channels <= 0)
         return AVERROR(ENOSYS);
     s->internal->data_offset = avio_rl32(s->pb);
     avio_r8(s->pb);
     st->codecpar->block_align = avio_rl32(s->pb);
-    if (st->codecpar->block_align > INT_MAX / FF_SANE_NB_CHANNELS)
+    if (st->codecpar->block_align > INT_MAX / FF_SANE_NB_CHANNELS || st->codecpar->block_align <= 0)
         return AVERROR_INVALIDDATA;
     st->codecpar->block_align *= st->codecpar->channels;
 
@@ -75,7 +75,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
     return av_get_packet(s->pb, pkt, st->codecpar->block_align);
 }
 
-AVInputFormat ff_boa_demuxer = {
+const AVInputFormat ff_boa_demuxer = {
     .name           = "boa",
     .long_name      = NULL_IF_CONFIG_SMALL("Black Ops Audio"),
     .read_probe     = probe,