From ed96ac87a94aa0943412af93ef51c22cdc4c907c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 31 Jul 2024 20:06:49 +0200 Subject: [PATCH] avformat/iamf_parse: Check for 0 samples Fixes: division by zero Fixes: 70561/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6199435013455872 Fixes: 70565/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-5783790316748800 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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c index cdfd5f75fe..e007d6a7af 100644 --- a/libavformat/iamf_parse.c +++ b/libavformat/iamf_parse.c @@ -252,7 +252,7 @@ static int codec_config_obu(void *s, IAMFContext *c, AVIOContext *pb, int len) if (ret < 0) goto fail; - if ((codec_config->nb_samples > INT_MAX) || + if ((codec_config->nb_samples > INT_MAX) || codec_config->nb_samples <= 0 || (-codec_config->audio_roll_distance > INT_MAX / codec_config->nb_samples)) { ret = AVERROR_INVALIDDATA; goto fail;