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From 9d00fb9d70ee8c0cc7002b89318c5be00f1bbdad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AD=99=E6=B5=A9=28=E6=99=93=E9=BB=91=29?=
<tony.sh@alibaba-inc.com>
Date: Tue, 29 Aug 2017 23:59:21 +0200
Subject: [PATCH] avformat/mxfdec: Fix Sign error in mxf_read_primer_pack()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fixes: 20170829B.mxf
Co-Author: 张洪亮(望初)" <wangchu.zhl@alibaba-inc.com>
Found-by: Xiaohei and Wangchu from Alibaba Security Team
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
CVE: CVE-2017-14169
Upstream-Status: Backport
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
libavformat/mxfdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 6adb77d..91731a7 100644
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -500,7 +500,7 @@ static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, U
avpriv_request_sample(pb, "Primer pack item length %d", item_len);
return AVERROR_PATCHWELCOME;
}
- if (item_num > 65536) {
+ if (item_num > 65536 || item_num < 0) {
av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num);
return AVERROR_INVALIDDATA;
}
--
2.1.0
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