Module: libav Branch: release/0.7 Commit: 43e3e7764c498138c28507c5a7dfcd08c0748633
Author: Justin Ruggles <[email protected]> Committer: Reinhard Tartler <[email protected]> Date: Fri Mar 2 16:27:57 2012 -0500 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:[email protected] (cherry picked from commit 1ec075cfecac01f9a289965db06f76365b0b1737) Signed-off-by: Reinhard Tartler <[email protected]> --- libavcodec/wmaenc.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c index 5f272f3..bf451aa 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); _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
