[FFmpeg-devel] [PATCH 1/3] avformat/iamf_parse: clear padding

[Michael Niedermayer]

Fixes: use of uninitialized value
Fixes: 70929/clusterfuzz-testcase-minimized-ffmpeg_dem_IAMF_fuzzer-5931276639469568

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/iamf_parse.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c
index 296e49157b0..f2b6d4fa518 100644
--- a/libavformat/iamf_parse.c
+++ b/libavformat/iamf_parse.c
@@ -1076,6 +1076,7 @@ int ff_iamfdec_read_descriptors(IAMFContext *c, AVIOContext *pb,
         size = avio_read(pb, header, FFMIN(MAX_IAMF_OBU_HEADER_SIZE, max_size));
         if (size < 0)
             return size;
+        memset(header + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 
         len = ff_iamf_parse_obu_header(header, size, &obu_size, &start_pos, &type, NULL, NULL);
         if (len < 0 || obu_size > max_size) {
-- 
2.45.2