Re: [PATCH v2 0/1] MR7925: gdi32: Limit source string length in logfont_AtoW (ASan).

[Alexandre Julliard (＠julliard)]

Alexandre Julliard (@julliard) commented about dlls/gdi32/text.c:
> static void logfont_AtoW( const LOGFONTA *fontA, LPLOGFONTW fontW )
>  {
>      memcpy( fontW, fontA, sizeof(LOGFONTA) - LF_FACESIZE );
> - MultiByteToWideChar( CP_ACP, 0, fontA->lfFaceName, -1, fontW->lfFaceName,
> -
>                     LF_FACESIZE );
> - MultiByteToWideChar( CP_ACP, 0, fontA->lfFaceName, LF_FACESIZE - 1,
> -
>                     fontW->lfFaceName, LF_FACESIZE - 1 );

This would convert potentially uninitialized data.