Prevent calling init_vlc() with invalid parameters in motionpixels de…

…coder. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
www-madcap-nl · Sep 29, 2011 · 41b7389 · 41b7389
1 parent 56ee5a9
commit 41b7389
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c
@@ -279,6 +279,8 @@ static int mp_decode_frame(AVCodecContext *avctx,
     if (sz == 0)
         goto end;
 
+    if (mp->max_codes_bits <= 0)
+        goto end;
     if (init_vlc(&mp->vlc, mp->max_codes_bits, mp->codes_count, &mp->codes[0].size, sizeof(HuffCode), 1, &mp->codes[0].code, sizeof(HuffCode), 4, 0))
         goto end;
     mp_decode_frame_helper(mp, &gb);