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[bzip2] Avoid use of uninitialized memory. 

* src/bzip2/ftbzip2.c (FT_Stream_OpenBzip2): Don't use `FT_QNEW` but
`FT_NEW` for setting up `zip` to avoid uninitialized memory access while
handling malformed PCF fonts later on.

Fixes

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42800
This commit is contained in:
Werner Lemberg 2022-01-09 07:48:59 +01:00
parent ca01112894
commit d276bcb7f0
1 changed files with 3 additions and 1 deletions
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4
src/bzip2/ftbzip2.c
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@ -481,7 +481,9 @@
FT_ZERO( stream ); FT_ZERO( stream );
stream->memory = memory; stream->memory = memory;
if ( !FT_QNEW( zip ) ) /* Don't use `FT_QNEW` here to avoid problems with uninitialized */
/* memory later on if the font is malformed. */
if ( !FT_NEW( zip ) )
{ {
error = ft_bzip2_file_init( zip, stream, source ); error = ft_bzip2_file_init( zip, stream, source );
if ( error ) if ( error )