[FFmpeg-devel] [PATCH 2/4] avformat/wtvdec: Initialize buf
Michael Niedermayer
michael at niedermayer.cc
Thu Dec 26 05:01:48 EET 2024
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
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