Hi!
Attached patch hopefully fixes ticket #5136.
Please review, Carl Eugen
From 09a31f8f6584f0c97443fd6edc7fcf7142b6a6ff Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceho...@ag.or.at>
Date: Sat, 24 Sep 2016 15:26:21 +0200
Subject: [PATCH] lavf/utils: Do not overflow in update_initial_timestamps().
Fixes ticket #5136.
---
libavformat/utils.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 93ea6ff..4362a12 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1069,7 +1069,9 @@ static void update_initial_timestamps(AVFormatContext *s,
int stream_index,
if (st->first_dts != AV_NOPTS_VALUE ||
dts == AV_NOPTS_VALUE ||
st->cur_dts == AV_NOPTS_VALUE ||
- is_relative(dts))
+ is_relative(dts) ||
+ INT64_MIN + RELATIVE_TS_BASE > st->cur_dts ||
+ (dts > 0 ? INT64_MAX - dts < st->cur_dts - RELATIVE_TS_BASE :
INT64_MIN - dts > st->cur_dts - RELATIVE_TS_BASE))
return;
st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
--
1.7.10.4
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