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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-08 22:40:50 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-03-10 02:44:45 +0100 |
| commit | 06e092e7819b9437da32925200e7c369f93d82e7 (patch) | |
| tree | 6e509c53fe446b304493ed16a33a9b3dd625f3a4 /libavformat | |
| parent | 02ecda4aba69670ca744ccc640391b7621f01fb0 (diff) | |
| download | ffmpeg-06e092e7819b9437da32925200e7c369f93d82e7.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>
Diffstat (limited to 'libavformat')
| -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 3ff515d492..bafe1dc8da 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; } |