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Merge commit '83c285f88016b087c2f0f4b9ef356ad8ef12d947'

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* commit '83c285f88016b087c2f0f4b9ef356ad8ef12d947':
  wtv: Add more sanity checks for a length read from the file

Conflicts:
	libavformat/wtv.c

See: c42efad3c3
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-20 14:51:02 +02:00
commit 6c18775bae
1 changed files with 6 additions and 1 deletions
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7
libavformat/wtvdec.c
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@ -261,7 +261,12 @@ static AVIOContext * wtvfile_open2(AVFormatContext *s, const uint8_t *buf, int b
dir_length = AV_RL16(buf + 16);
file_length = AV_RL64(buf + 24);
name_size = 2 * AV_RL32(buf + 32);
if (buf + 48 + (int64_t)name_size > buf_end || name_size<0) {
if (name_size < 0) {
av_log(s, AV_LOG_ERROR,
"bad filename length, remaining directory entries ignored\n");
break;
}
if (48 + (int64_t)name_size > buf_end - buf) {
av_log(s, AV_LOG_ERROR, "filename exceeds buffer size; remaining directory entries ignored\n");
break;
}