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[Git][freetype/freetype][master] * src/truetype/ttgxvar.c (tt_var_get_it

From: Werner Lemberg (@wl)
Subject: [Git][freetype/freetype][master] * src/truetype/ttgxvar.c (tt_var_get_item_delta): Check `face->blend`.
Date: Wed, 01 Feb 2023 11:03:43 +0000

Werner Lemberg pushed to branch master at FreeType / FreeType

Commits:

  • 9508811a
    by Werner Lemberg at 2023-02-01T12:01:58+01:00 
    * src/truetype/ttgxvar.c (tt_var_get_item_delta): Check `face->blend`.

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55581

1 changed file:

Changes:

  • src/truetype/ttgxvar.c
    ... ... @@ -1004,16 +1004,16 @@
    1004 1004 
         GX_ItemVarData    varData;
    1005 1005 
         FT_ItemVarDelta*  deltaSet;
    1006 1006
    1007 
    -    FT_UInt           master, j;
    1008 
    -    FT_Fixed*         scalars;
    1009 
    -    FT_ItemVarDelta   returnValue;
    1007 
    +    FT_UInt          master, j;
    1008 
    +    FT_Fixed*        scalars;
    1009 
    +    FT_ItemVarDelta  returnValue;
    1010 1010
    1011 1011
    1012 
    -    if ( !face->blend->normalizedcoords )
    1012 
    +    if ( !face->blend || !face->blend->normalizedcoords )
    1013 1013 
           return 0;
    1014 1014
    1015 
    -    /* OpenType 1.8.4+: No variation data for this item
    1016 
    -     *  as indices have special value 0xFFFF. */
    1015 
    +    /* OpenType 1.8.4+: No variation data for this item */
    1016 
    +    /* as indices have special value 0xFFFF.            */
    1017 1017 
         if ( outerIndex == 0xFFFF && innerIndex == 0xFFFF )
    1018 1018 
           return 0;
    1019 1019

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