From 1ec075cfecac01f9a289965db06f76365b0b1737 Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Fri, 2 Mar 2012 16:27:57 -0500 Subject: wmaenc: limit allowed sample rate to 48kHz ff_wma_init() allows up to 50kHz, but this generates an exponent band size table that requires 65 bands. The code assumes 25 bands in many places, and using sample rates higher than 48kHz will lead to buffer overwrites. CC:libav-stable@libav.org --- libavcodec/wmaenc.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'libavcodec/wmaenc.c') diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c index e24a3f4205..99544c0c8a 100644 --- a/libavcodec/wmaenc.c +++ b/libavcodec/wmaenc.c @@ -39,6 +39,12 @@ static int encode_init(AVCodecContext * avctx){ return AVERROR(EINVAL); } + if (avctx->sample_rate > 48000) { + av_log(avctx, AV_LOG_ERROR, "sample rate is too high: %d > 48kHz", + avctx->sample_rate); + return AVERROR(EINVAL); + } + if(avctx->bit_rate < 24*1000) { av_log(avctx, AV_LOG_ERROR, "bitrate too low: got %i, need 24000 or higher\n", avctx->bit_rate); -- cgit v1.2.3