[FFmpeg-cvslog] avformat/iamf_parse: clear padding
Michael Niedermayer
git at videolan.org
Mon Aug 19 00:19:00 EEST 2024
ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Aug 14 16:34:19 2024 +0200| [7e5410eadb51645e67d91708494c7566771f9015] | committer: Michael Niedermayer
avformat/iamf_parse: clear padding
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
Reviewed-by: James Almer <jamrial at gmail.com>
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7e5410eadb51645e67d91708494c7566771f9015
---
libavformat/iamf_parse.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c
index bc8d726b53..080c1a457a 100644
--- a/libavformat/iamf_parse.c
+++ b/libavformat/iamf_parse.c
@@ -1081,6 +1081,7 @@ 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) {
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