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[woff2] Fix segfault. 

Reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23402

* src/sfnt/sfwoff2.c (get_x_mins): Check whether `loca' table
exists.
This commit is contained in:
Werner Lemberg 2020-06-19 05:41:37 +02:00
parent d924c5cf7e
commit 4d364b6821
2 changed files with 17 additions and 0 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2020-06-19 Werner Lemberg <wl@gnu.org>
[woff2] Fix segfault.
Reported as
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23402
* src/sfnt/sfwoff2.c (get_x_mins): Check whether `loca' table
exists.
2020-06-19 Stephen McDowell <svenevs.dev@gmail.com>
[sfnt] Support Intel compilers.

6
src/sfnt/sfwoff2.c
View File

@ -1286,6 +1286,12 @@
return FT_THROW( Invalid_Table );
}
if ( !info->loca_table )
{
FT_ERROR(( "`loca' table is missing.\n" ));
return FT_THROW( Invalid_Table );
}
/* Read `numGlyphs' field from `maxp' table. */
if ( FT_STREAM_SEEK( maxp_table->src_offset ) || FT_STREAM_SKIP( 8 ) )
return error;