From: Michael Niedermayer <michael@niedermayer.cc>
Date: Wed, 12 Jun 2019 19:20:04 +0000 (+0200)
Subject: avformat/img2dec: Fix probe_buffer leak in ff_img_read_header()
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=bd3672ba75c7e4a4b0cb2b46b8b6c983d73a0107;p=ffmpeg

avformat/img2dec: Fix probe_buffer leak in ff_img_read_header()

Fixes: memleak
Fixes: 15171/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5683881644130304

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---

diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
index fe45c5e5ecd..f8b4a655a53 100644
--- a/libavformat/img2dec.c
+++ b/libavformat/img2dec.c
@@ -356,6 +356,7 @@ int ff_img_read_header(AVFormatContext *s1)
             }
             if (s1->flags & AVFMT_FLAG_CUSTOM_IO) {
                 avio_seek(s1->pb, 0, SEEK_SET);
+                av_freep(&probe_buffer);
             } else
                 ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
         }