From a108a4d809f8345303e1aa7578d608a726c53686 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 14 Nov 2020 22:27:00 +0100 Subject: [PATCH] avcodec/mobiclip: Check mv against INT_MAX Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int' Fixes: 27369/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOBICLIP_fuzzer-5083469356728320 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/mobiclip.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/mobiclip.c b/libavcodec/mobiclip.c index 42d33cf6a5..3c2df80896 100644 --- a/libavcodec/mobiclip.c +++ b/libavcodec/mobiclip.c @@ -1146,6 +1146,8 @@ static int predict_motion(AVCodecContext *avctx, mv.x = mv.x + get_se_golomb(gb); mv.y = mv.y + get_se_golomb(gb); } + if (mv.x >= INT_MAX || mv.y >= INT_MAX) + return AVERROR_INVALIDDATA; motion[offsetm].x = mv.x; motion[offsetm].y = mv.y;