[FFmpeg-devel] [PATCH 2/4] avformat/wtvdec: Initialize buf

[Michael Niedermayer]

ff_parse_mpeg2_descriptor() reads over what is initialized
Fixes: use of uninitialized memory
Fixes: 383825645/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-5144130618982400

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

diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c
index 730c7fca783..21c96498693 100644
--- a/libavformat/wtvdec.c
+++ b/libavformat/wtvdec.c
@@ -833,7 +833,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
             int stream_index = ff_find_stream_index(s, sid);
             if (stream_index >= 0) {
                 AVStream *st = s->streams[stream_index];
-                uint8_t buf[258];
+                uint8_t buf[258] = {0};
                 const uint8_t *pbuf = buf;
                 int buf_size;
 
-- 
2.47.0