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protect malloc overflow

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Originally committed as revision 12208 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-02-25 12:45:59 +00:00
parent 17871a02ad
commit 852859ff7c
1 changed files with 2 additions and 0 deletions
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2
libavformat/mov.c
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@ -291,6 +291,8 @@ static int mov_read_esds(MOVContext *c, ByteIOContext *pb, MOV_atom_t atom)
len = mp4_read_descr(c, pb, &tag);
if (tag == MP4DecSpecificDescrTag) {
dprintf(c->fc, "Specific MPEG4 header len=%d\n", len);
if((uint64_t)len > (1<<30))
return -1;
st->codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);