From 82e266c6d3fbf3cc74e515b883e66543381a0f2c Mon Sep 17 00:00:00 2001 From: Martin Storsjö Date: Thu, 19 Sep 2013 16:02:29 +0300 Subject: segafilm: Validate the number of audio channels MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This avoids divisions by zero later. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org Signed-off-by: Martin Storsjö --- libavformat/segafilm.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'libavformat/segafilm.c') diff --git a/libavformat/segafilm.c b/libavformat/segafilm.c index adf24759c6..5643f33cc8 100644 --- a/libavformat/segafilm.c +++ b/libavformat/segafilm.c @@ -111,6 +111,11 @@ static int film_read_header(AVFormatContext *s) return AVERROR(EIO); film->audio_samplerate = AV_RB16(&scratch[24]); film->audio_channels = scratch[21]; + if (!film->audio_channels || film->audio_channels > 2) { + av_log(s, AV_LOG_ERROR, + "Invalid number of channels: %d\n", film->audio_channels); + return AVERROR_INVALIDDATA; + } film->audio_bits = scratch[22]; if (scratch[23] == 2) film->audio_type = AV_CODEC_ID_ADPCM_ADX; -- cgit v1.2.3