mlpdec: check for negative index

CC: libav-stable@libav.org Bug-Id: CID 970924
10 years ago · 2ffb0598db
parent 6abe7edabb
commit 2ffb0598db
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/mlpdec.c
+++ b/libavcodec/mlpdec.c
@ -552,7 +552,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
            ch_assign = av_get_channel_layout_channel_index(s->ch_layout,
                                                            channel);
        }
-        if (ch_assign > s->max_matrix_channel) {
+        if (ch_assign < 0 || ch_assign > s->max_matrix_channel) {
            avpriv_request_sample(m->avctx,
                                  "Assignment of matrix channel %d to invalid output channel %d",
                                  ch, ch_assign);