From 81aa2e05e4e37cca71b570f10071bd21064930dd Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 23 Apr 2021 17:28:29 +0200 Subject: [PATCH] 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 (cherry picked from commit bae2e1977744f42d56b85193d4910811de829714) Signed-off-by: Michael Niedermayer --- libavformat/aiffdec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/aiffdec.c b/libavformat/aiffdec.c index a54bd92e7e..d10c4aa584 100644 --- a/libavformat/aiffdec.c +++ b/libavformat/aiffdec.c @@ -102,6 +102,9 @@ 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++; codec->codec_type = AVMEDIA_TYPE_AUDIO;