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[truetype] Fix UBSan warning on offset to nullptr (#57501). 

* src/truetype/ttinterp.c (Ins_CALL): Fail if `exc->FDefs' is null.
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Dominik Röttsches 2019-12-30 11:22:04 +02:00 committed by Werner Lemberg
parent a4df0373c7
commit 10d8de7541
2 changed files with 9 additions and 0 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2020-01-02 Dominik Röttsches <drott@chromium.org>
[truetype] Fix UBSan warning on offset to nullptr (#57501).
* src/truetype/ttinterp.c (Ins_CALL): Fail if `exc->FDefs' is null.
2019-12-31 Nikhil Ramakrishnan <ramakrishnan.nikhil@gmail.com>
[woff2] Allow bitmap-only fonts (#57394).

3
src/truetype/ttinterp.c
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@ -3965,6 +3965,9 @@
if ( BOUNDSL( F, exc->maxFunc + 1 ) )
goto Fail;
if ( !exc->FDefs )
goto Fail;
/* Except for some old Apple fonts, all functions in a TrueType */
/* font are defined in increasing order, starting from 0. This */
/* means that we normally have */