[FFmpeg-devel] [PATCH 4/4] avformat/aiffdec: Check that SSND is at least 8 bytes
Michael Niedermayer
michael at niedermayer.cc
Wed Mar 3 11:49:04 EET 2021
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
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
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 */
--
2.17.1
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