Prevent calling init_vlc() with invalid parameters in motionpixels decoder.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Prevent calling init_vlc() with invalid parameters in motionpixels decoder.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
41b7389c · Laurent Aimar · Michael Niedermayer · 56ee5a9a · 41b7389c
Commit 41b7389c authored Sep 28, 2011 by Laurent Aimar Committed by Michael Niedermayer Sep 29, 2011
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motionpixels.c libavcodec/motionpixels.c +2 -0

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--- 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);