From 0e15b01b4e463d12128db2c15de7741637548347 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 8 Jun 2020 09:28:55 +0200 Subject: [PATCH] avformat/thp: Check fps Fixes: division by zero Fixes: 23162/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4856420817436672 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavformat/thp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/thp.c b/libavformat/thp.c index 4abff1313a..bcc3febaa1 100644 --- a/libavformat/thp.c +++ b/libavformat/thp.c @@ -75,6 +75,8 @@ static int thp_read_header(AVFormatContext *s) avio_rb32(pb); /* Max samples. */ thp->fps = av_d2q(av_int2float(avio_rb32(pb)), INT_MAX); + if (thp->fps.den <= 0 || thp->fps.num < 0) + return AVERROR_INVALIDDATA; thp->framecnt = avio_rb32(pb); thp->first_framesz = avio_rb32(pb); pb->maxsize = avio_rb32(pb);