[FFmpeg-cvslog] avformat/aiffdec: Check for size overflow in header parsing
Michael Niedermayer
git at videolan.org
Wed Sep 8 22:43:29 EEST 2021
ffmpeg | branch: release/4.4 | Michael Niedermayer <michael at niedermayer.cc> | Fri Apr 23 17:28:29 2021 +0200| [666631324803665d52b8635cbc99a91d0419cf1f] | committer: Michael Niedermayer
avformat/aiffdec: Check for size overflow in header parsing
Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6723467048255488
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit bae2e1977744f42d56b85193d4910811de829714)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=666631324803665d52b8635cbc99a91d0419cf1f
---
libavformat/aiffdec.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c
index dcaf1560b6..8b85fea809 100644
--- a/libavformat/aiffdec.c
+++ b/libavformat/aiffdec.c
@@ -100,6 +100,9 @@ static int get_aiff_header(AVFormatContext *s, int size,
int sample_rate;
unsigned int num_frames;
+ if (size == INT_MAX)
+ return AVERROR_INVALIDDATA;
+
if (size & 1)
size++;
par->codec_type = AVMEDIA_TYPE_AUDIO;
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