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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-14 18:32:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-04-14 18:54:10 +0200 |
| commit | c42efad3c34cace09555e05fd0cb81cb59cc726f (patch) | |
| tree | 22c764606a8457b1c68e743f24f266d034fe9129 /libavformat | |
| parent | 83c7803f55b3231faeb93c1a634399a70fae9480 (diff) | |
| download | ffmpeg-c42efad3c34cace09555e05fd0cb81cb59cc726f.tar.gz | |
wtvdec: fix name_size check to consider integer overflows.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/wtvdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c index 537dc8ee0d..a2a26c2ccb 100644 --- a/libavformat/wtvdec.c +++ b/libavformat/wtvdec.c @@ -258,7 +258,7 @@ 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 + name_size > buf_end) { + if (buf + 48 + (int64_t)name_size > buf_end || name_size<0) { av_log(s, AV_LOG_ERROR, "filename exceeds buffer size; remaining directory entries ignored\n"); break; } |