From 33624f4f2e1feb08f277126e637d4a28016eb07a Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Thu, 8 Oct 2020 20:44:23 +0200
Subject: [PATCH] avformat/flvdec: Check for EOF in amf_parse_object()

Fixes: Timeout (too long -> 1ms)
Fixes: 26108/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5653887668977664

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavformat/flvdec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index d480d0bc67..ac9f9c77db 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -495,6 +495,8 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream,
 
     num_val  = 0;
     ioc      = s->pb;
+    if (avio_feof(ioc))
+        return AVERROR_EOF;
     amf_type = avio_r8(ioc);
 
     switch (amf_type) {