Module: libav Branch: master Commit: c9837954e7b968d44f82e7cdb7618e9f523b196c
Author: Michael Niedermayer <[email protected]> Committer: Ronald S. Bultje <[email protected]> Date: Sat Mar 10 00:08:32 2012 +0100 snow: reject unsupported chroma shifts. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: [email protected] Signed-off-by: Ronald S. Bultje <[email protected]> --- libavcodec/snowdec.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c index 1dccc63..58a80b3 100644 --- a/libavcodec/snowdec.c +++ b/libavcodec/snowdec.c @@ -327,6 +327,11 @@ static int decode_header(SnowContext *s){ return -1; } + if (s->chroma_h_shift != 1 || s->chroma_v_shift != 1) { + av_log(s->avctx, AV_LOG_ERROR, "Invalid chroma shift\n"); + return AVERROR_PATCHWELCOME; + } + s->qlog += get_symbol(&s->c, s->header_state, 1); s->mv_scale += get_symbol(&s->c, s->header_state, 1); s->qbias += get_symbol(&s->c, s->header_state, 1); _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
