From 7e5410eadb51645e67d91708494c7566771f9015 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 14 Aug 2024 16:34:19 +0200 Subject: [PATCH] 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 Signed-off-by: Michael Niedermayer --- 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) {