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Commit 1cd0a551 authored by Laurent Aimar's avatar Laurent Aimar Committed by Janne Grunau
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motionpixels: Prevent calling init_vlc() with invalid parameters 

Signed-off-by: 's avatarJanne Grunau <janne-libav@jannau.net>
parent 5f05cf4e
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libavcodec/motionpixels.c
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...@@ -281,6 +281,8 @@ static int mp_decode_frame(AVCodecContext *avctx, ...@@ -281,6 +281,8 @@ static int mp_decode_frame(AVCodecContext *avctx,
if (sz == 0) if (sz == 0)
goto end; 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)) 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; goto end;
mp_decode_frame_helper(mp, &gb); mp_decode_frame_helper(mp, &gb);
......
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