From 97751fda3eb4adef67b93a7033e81299133ddd7b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 4 Apr 2024 00:20:34 +0200 Subject: [PATCH] avformat/iamf_parse: Check sound_system Fixes: index 13 out of bounds for type 'const struct IAMFSoundSystemMap [13]' Fixes: 67796/clusterfuzz-testcase-minimized-ffmpeg_dem_IAMF_fuzzer-4554553191104512 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer (cherry picked from commit 4593cf7ab3f0ff2884880b625f1873f0eaf7a439) Signed-off-by: Michael Niedermayer --- libavformat/iamf_parse.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c index cb49cf0a57..210cadd85a 100644 --- a/libavformat/iamf_parse.c +++ b/libavformat/iamf_parse.c @@ -933,6 +933,10 @@ static int mix_presentation_obu(void *s, IAMFContext *c, AVIOContext *pb, int le if (submix_layout->layout_type == 2) { int sound_system; sound_system = (byte >> 2) & 0xF; + if (sound_system >= FF_ARRAY_ELEMS(ff_iamf_sound_system_map)) { + ret = AVERROR_INVALIDDATA; + goto fail; + } av_channel_layout_copy(&submix_layout->sound_system, &ff_iamf_sound_system_map[sound_system].layout); }