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-rw-r--r--ChangeLog7
-rw-r--r--src/truetype/ttgxvar.c4
2 files changed, 9 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 48e7836c6..2b8fce821 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2018-11-07 Ben Wagner <bungeman@google.com>
+
+ [truetype] Fix VF check from 2018-09-12 (#54973).
+
+ * src/truetype/ttgxvar.c (TT_Vary_Apply_Glyph_Deltas): Use correct
+ offsets for estimates.
+
2018-11-06 Werner Lemberg <wl@gnu.org>
[pshinter] Fix numeric overflow.
diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index ae425e48e..8fda112b0 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -3725,8 +3725,8 @@
offsetToData = FT_GET_USHORT();
/* rough sanity test */
- if ( offsetToData + ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) * 4 >
- dataSize )
+ if ( offsetToData > dataSize ||
+ ( tupleCount & GX_TC_TUPLE_COUNT_MASK ) * 4 > dataSize )
{
FT_TRACE2(( "TT_Vary_Apply_Glyph_Deltas:"
" invalid glyph variation array header\n" ));