From 32556fa62b1d0615f621fd8f71bdfe3b72e43896 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 23 Jul 2023 01:46:20 +0200 Subject: [PATCH] avformat/avr: Check sample rate Fixes: 54979/clusterfuzz-testcase-minimized-ffmpeg_dem_AVR_fuzzer-6681035461230592 Fixes: Timeout Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Andreas Rheinhardt Signed-off-by: Michael Niedermayer --- libavformat/avr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/avr.c b/libavformat/avr.c index 1cc4d56bfb..dce977b6ac 100644 --- a/libavformat/avr.c +++ b/libavformat/avr.c @@ -70,6 +70,9 @@ static int avr_read_header(AVFormatContext *s) avio_skip(s->pb, 1); // replay speed st->codecpar->sample_rate = avio_rb24(s->pb); + if (st->codecpar->sample_rate == 0) + return AVERROR_INVALIDDATA; + avio_skip(s->pb, 4 * 3); avio_skip(s->pb, 2 * 3); avio_skip(s->pb, 20);