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* src/sfnt/sfwoff2.c (woff2_open_font): Check (sum of) table sizes.

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Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17684
This commit is contained in:
Werner Lemberg 2019-09-25 08:48:26 +02:00
parent 4881f75b7c
commit db4083fd7f
2 changed files with 15 additions and 0 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2019-09-25 Werner Lemberg <wl@gnu.org>
* src/sfnt/sfwoff2.c (woff2_open_font): Check (sum of) table sizes.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17684
2019-09-23 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/base/ftstroke.c (ft_stroke_border_arcto): Speed up calculations.

7
src/sfnt/sfwoff2.c
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@ -2161,6 +2161,13 @@
goto Exit;
}
if ( woff2.uncompressed_size > sfnt_size )
{
FT_ERROR(( "woff2_open_font: SFNT table lengths are too large.\n" ));
error = FT_THROW( Invalid_Table );
goto Exit;
}
/* Allocate memory for uncompressed table data. */
if ( FT_ALLOC( uncompressed_buf, woff2.uncompressed_size ) ||
FT_FRAME_ENTER( woff2.totalCompressedSize ) )