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size < 4 is invalid 

Originally committed as revision 16829 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2009-01-27 20:51:10 +00:00
parent f7ad5aa2e8
commit 4698bb2457
1 changed files with 1 additions and 1 deletions
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2
libavformat/4xm.c
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@ -114,7 +114,7 @@ static int fourxm_read_header(AVFormatContext *s,
/* check for LIST-HEAD */
GET_LIST_HEADER();
header_size = size - 4;
if (fourcc_tag != HEAD_TAG)
if (fourcc_tag != HEAD_TAG || size < 4)
return AVERROR_INVALIDDATA;
/* allocate space for the header and load the whole thing */