From 8efaee3710baa87af40556a622bf2d96a27c6425 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Tue, 10 May 2016 23:12:58 +0200
Subject: [PATCH] avformat/oggparseopus: Check that granule pos is within the
 supported range

Larger values would imply file durations of astronomic proportions and cause
overflows

Fixes integer overflow
Fixes: usan_int64_overflow

Found-by: Thomas Guilbert <tguilbert@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/oggparseopus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavformat/oggparseopus.c b/libavformat/oggparseopus.c
index 8191b1083c..99aa4398dd 100644
--- a/libavformat/oggparseopus.c
+++ b/libavformat/oggparseopus.c
@@ -117,6 +117,10 @@ static int opus_packet(AVFormatContext *avf, int idx)
 
     if (!os->psize)
         return AVERROR_INVALIDDATA;
+    if (os->granule > INT64_MAX - UINT32_MAX) {
+        av_log(avf, AV_LOG_ERROR, "Unsupported huge granule pos %"PRId64 "\n", os->granule);
+        return AVERROR_INVALIDDATA;
+    }
 
     if ((!os->lastpts || os->lastpts == AV_NOPTS_VALUE) && !(os->flags & OGG_FLAG_EOS)) {
         int seg, d;