[FFmpeg-cvslog] avcodec/mpegaudio_parser: Initialize poutbuf*

[Michael Niedermayer]

ffmpeg | branch: release/4.0 | Michael Niedermayer <michael at niedermayer.cc> | Sun Aug  5 14:51:36 2018 +0200| [c0a6febf32318326af0d2a85b104ea6674c55d50] | committer: Michael Niedermayer

avcodec/mpegaudio_parser: Initialize poutbuf*

Possibly fixes: null pointer dereference
Possibly fixes: 9352/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MP3ADUFLOAT_fuzzer-5146068961460224
Fixes: Heap-use-after-free
Fixes: 9453/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MP3ADUFLOAT_fuzzer-5137954375729152

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 0f4c3b0b8e5435d13fd3b64c91969b31c3c018dc)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c0a6febf32318326af0d2a85b104ea6674c55d50
---

 libavcodec/mpegaudio_parser.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/mpegaudio_parser.c b/libavcodec/mpegaudio_parser.c
index 244281b56f..a109f12701 100644
--- a/libavcodec/mpegaudio_parser.c
+++ b/libavcodec/mpegaudio_parser.c
@@ -99,6 +99,8 @@ static int mpegaudio_parse(AVCodecParserContext *s1,
                     } else if (codec_id == AV_CODEC_ID_MP3ADU) {
                         avpriv_report_missing_feature(avctx,
                             "MP3ADU full parser");
+                        *poutbuf = NULL;
+                        *poutbuf_size = 0;
                         return 0; /* parsers must not return error codes */
                     }