Fixes: out of array access Fixes: 68863/clusterfuzz-testcase-minimized-ffmpeg_dem_IAMF_fuzzer-4833546039525376
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: James Almer <jamr...@gmail.com> --- libavformat/iamf_parse.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/libavformat/iamf_parse.c b/libavformat/iamf_parse.c index 312090b247..ff1b6cc75b 100644 --- a/libavformat/iamf_parse.c +++ b/libavformat/iamf_parse.c @@ -92,13 +92,16 @@ static int aac_decoder_config(IAMFCodecConfig *codec_config, if (left <= 0) return AVERROR_INVALIDDATA; - codec_config->extradata = av_malloc(left); + // We pad extradata here because avpriv_mpeg4audio_get_config2() needs it. + codec_config->extradata = av_malloc(left + AV_INPUT_BUFFER_PADDING_SIZE); if (!codec_config->extradata) return AVERROR(ENOMEM); codec_config->extradata_size = avio_read(pb, codec_config->extradata, left); if (codec_config->extradata_size < left) return AVERROR_INVALIDDATA; + memset(codec_config->extradata + codec_config->extradata_size, 0, + AV_INPUT_BUFFER_PADDING_SIZE); ret = avpriv_mpeg4audio_get_config2(&cfg, codec_config->extradata, codec_config->extradata_size, 1, logctx); -- 2.45.2 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
