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[base] Improve sanity check for Mac resources (#49888).

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* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Abort if `rlen' is not
positive.
This commit is contained in:
Werner Lemberg 2016-12-21 06:52:23 +01:00
parent ded4bdb5d0
commit 57a6733dcf
2 changed files with 8 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2016-12-21 Werner Lemberg <wl@gnu.org>
[base] Improve sanity check for Mac resources (#49888).
* src/base/ftobjs.c (Mac_Read_sfnt_Resource): Abort if `rlen' is not
positive.
2016-12-20 Werner Lemberg <wl@gnu.org>
[base] More sanity checks for Mac resources.

2
src/base/ftobjs.c
View File

@ -1842,7 +1842,7 @@
if ( FT_READ_LONG( rlen ) )
goto Exit;
if ( rlen == -1 )
if ( rlen < 1 )
return FT_THROW( Cannot_Open_Resource );
if ( (FT_ULong)rlen > FT_MAC_RFORK_MAX_LEN )
return FT_THROW( Invalid_Offset );