[FFmpeg-cvslog] avformat/wavdec: Avoid zeroing written to array

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Mon Nov  9 20:53:27 2020 +0100| [f26b5acfc03375c96e593197a8145ada1b63b1fd] | committer: Michael Niedermayer

avformat/wavdec: Avoid zeroing written to array

Fixes: OOM
Fixes: 26934/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-5996784213819392

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f26b5acfc03375c96e593197a8145ada1b63b1fd
---

 libavformat/wavdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
index 35c5e442a8..3da4150f05 100644
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@@ -917,7 +917,7 @@ static int w64_read_header(AVFormatContext *s)
                 if (chunk_size == UINT32_MAX || (filesize >= 0 && chunk_size > filesize))
                     return AVERROR_INVALIDDATA;
 
-                value = av_mallocz(chunk_size + 1);
+                value = av_malloc(chunk_size + 1);
                 if (!value)
                     return AVERROR(ENOMEM);