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check len (should fix #1165694) 

Originally committed as revision 4436 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-07-11 23:39:47 +00:00
parent 1a55810e87
commit aa6ff39bb0
1 changed files with 2 additions and 1 deletions
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3
libavcodec/mjpeg.c
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@ -1585,10 +1585,11 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
{
int len, id;
/* XXX: verify len field validity */
len = get_bits(&s->gb, 16);
if (len < 5)
return -1;
if(8*len + get_bits_count(&s->gb) > s->gb.size_in_bits)
return -1;
id = (get_bits(&s->gb, 16) << 16) | get_bits(&s->gb, 16);
id = be2me_32(id);