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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-08 22:40:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-10 01:18:52 +0200 |
| commit | 3b5645a72928e3eab7594205bab2d8aed8c114e8 (patch) | |
| tree | b74a2a89c04bbbb319da716730cfdaf1b1f8e52e | |
| parent | 7d915afd23aabe58c0d8fe260960263d7665703a (diff) | |
| download | ffmpeg-3b5645a72928e3eab7594205bab2d8aed8c114e8.tar.gz | |
avformat/avidec: Fix integer overflow in cum_len check
Fixes: signed integer overflow: 3775922176 * 4278190080 cannot be represented in type 'long'
Fixes: Chromium bug 791237
Reported-by: Matt Wolenetz <wolenetz@google.com>
Reviewed-by: Matt Wolenetz <wolenetz@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 06e092e7819b9437da32925200e7c369f93d82e7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/avidec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/avidec.c b/libavformat/avidec.c index 223ddd0530..81a43632bb 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -665,7 +665,7 @@ static int avi_read_header(AVFormatContext *s) st->start_time = 0; avio_rl32(pb); /* buffer size */ avio_rl32(pb); /* quality */ - if (ast->cum_len*ast->scale/ast->rate > 3600) { + if (ast->cum_len > 3600LL * ast->rate / ast->scale) { av_log(s, AV_LOG_ERROR, "crazy start time, iam scared, giving up\n"); ast->cum_len = 0; } |