From a4e85b2e1c8d5b4bf0091157bbdeb0e457fb7b8f 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?= 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)" Found-by: Xiaohei and Wangchu from Alibaba Security Team Signed-off-by: Michael Niedermayer (cherry picked from commit 9d00fb9d70ee8c0cc7002b89318c5be00f1bbdad) Signed-off-by: Michael Niedermayer --- libavformat/mxfdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 855d98b09ea03..2e5056ffe7fb1 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -421,7 +421,7 @@ 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; }