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[base] Check error when seeking to data supplied offset (#46635).

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* src/base/ftobjs.c (open_face_PS_from_sfnt_stream):
`ft_lookup_PS_in_sfnt_stream' returns offset and and length from
user supplied data.  Use of this these values must be checked.
This commit is contained in:
Ben Wagner 2015-12-14 07:00:41 +01:00 committed by Werner Lemberg
parent d8f9a453b2
commit f0cc1738e2
2 changed files with 14 additions and 5 deletions
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16
ChangeLog
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@ -1,3 +1,11 @@
2015-12-10 Ben Wagner <bungeman@gmail.com>
[base] Check error when seeking to data supplied offset (#46635).
* src/base/ftobjs.c (open_face_PS_from_sfnt_stream):
`ft_lookup_PS_in_sfnt_stream' returns offset and and length from
user supplied data. Use of this these values must be checked.
2015-12-13 Werner Lemberg <wl@gnu.org>
[autofit] Add support for Myanmar script.
@ -551,7 +559,7 @@
Handle them.
(af_autofitter_init): Initialize them.
2015-11-02 Bungeman <bungeman@gmail.com>
2015-11-02 Ben Wagner <bungeman@gmail.com>
[ftfuzzer] Add support for multiple files (patch #8779).
@ -759,7 +767,7 @@
* src/type1/t1afm.c (T1_Read_Metrics): Fix memory leak (#46229).
2015-10-19 Bungeman <bungeman@gmail.com>
2015-10-19 Ben Wagner <bungeman@gmail.com>
[cid] Better handle invalid glyph stream offsets (#46221).
@ -837,7 +845,7 @@
* src/tools/ftfuzzer/README: New file.
2015-10-15 Bungeman <bungeman@gmail.com>
2015-10-15 Ben Wagner <bungeman@gmail.com>
[bdf] Fix memory leak (#46213).
@ -860,7 +868,7 @@
The used indices were off by 1.
2015-10-15 Bungeman <bungeman@gmail.com>
2015-10-15 Ben Wagner <bungeman@gmail.com>
Werner Lemberg <wl@gnu.org>
* src/tools/ftfuzzer/ftfuzzer.cc: Handle fixed sizes (#46211).

3
src/base/ftobjs.c
View File

@ -1521,7 +1521,8 @@
if ( error )
goto Exit;
if ( FT_Stream_Seek( stream, pos + offset ) )
error = FT_Stream_Seek( stream, pos + offset );
if ( error )
goto Exit;
if ( FT_ALLOC( sfnt_ps, (FT_Long)length ) )