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[cff, cid] Fix segfaults in case of error (#58621). 

* src/cff/cffobjs.c (cff_slot_done), src/cid/cidobjs.c
(cid_slot_done): If `ft_glyphslot_init' fails to allocate
`internal', then the class' `done_slot' callback (called by
`ft_glyphslot_done') must not dereference the pointer to `internal'.
This commit is contained in:
Sebastian Rasmussen 2020-06-19 10:35:57 +02:00 committed by Werner Lemberg
parent d1180b5f95
commit 8ed5a2477e
3 changed files with 13 additions and 2 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2020-06-19 Sebastian Rasmussen <sebras@gmail.com>
[cff, cid] Fix segfaults in case of error (#58621).
* src/cff/cffobjs.c (cff_slot_done), src/cid/cidobjs.c
(cid_slot_done): If `ft_glyphslot_init' fails to allocate
`internal', then the class' `done_slot' callback (called by
`ft_glyphslot_done') must not dereference the pointer to `internal'.
2020-06-19 Werner Lemberg <wl@gnu.org>
[base] Fix UBSAN error.

3
src/cff/cffobjs.c
View File

@ -352,7 +352,8 @@
FT_LOCAL_DEF( void )
cff_slot_done( FT_GlyphSlot slot )
{
slot->internal->glyph_hints = NULL;
if ( slot->internal )
slot->internal->glyph_hints = NULL;
}

3
src/cid/cidobjs.c
View File

@ -49,7 +49,8 @@
FT_LOCAL_DEF( void )
cid_slot_done( FT_GlyphSlot slot )
{
slot->internal->glyph_hints = NULL;
if ( slot->internal )
slot->internal->glyph_hints = NULL;
}