From 460d3dc41f57a6dcefbd72db6e2e368fee05340b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 3 Mar 2021 10:49:04 +0100 Subject: [PATCH] avformat/aiffdec: Check that SSND is at least 8 bytes Fixes: Infinite loop Fixes: 30874/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-5933710488764416 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol Signed-off-by: Michael Niedermayer --- libavformat/aiffdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c index 5abc0c9643..dcaf1560b6 100644 --- a/libavformat/aiffdec.c +++ b/libavformat/aiffdec.c @@ -286,6 +286,8 @@ static int aiff_read_header(AVFormatContext *s) get_meta(s, "comment" , size); break; case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */ + if (size < 8) + return AVERROR_INVALIDDATA; aiff->data_end = avio_tell(pb) + size; offset = avio_rb32(pb); /* Offset of sound data */ avio_rb32(pb); /* BlockSize... don't care */