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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-08 22:40:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-18 01:16:03 +0200 |
| commit | 79efbd547ea3a023c241453ea6f6ea07fa57092d (patch) | |
| tree | 422ec389a1ec088f5337a0da12aee68c4028a0ea | |
| parent | 60f6767126002f8fe8a8926e43e5aa44c466a312 (diff) | |
| download | ffmpeg-79efbd547ea3a023c241453ea6f6ea07fa57092d.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 b8a31dcff2..f55d0694fa 100644 --- a/libavformat/avidec.c +++ b/libavformat/avidec.c @@ -670,7 +670,7 @@ FF_ENABLE_DEPRECATION_WARNINGS 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; } |