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| author | Jiang Jiang <jiang.jiang@nokia.com> | 2011-07-18 06:49:32 (GMT) |
|---|---|---|
| committer | Jiang Jiang <jiang.jiang@nokia.com> | 2011-07-19 08:47:34 (GMT) |
| commit | 9ae6f2f9a57f0c3096d5785913e437953fa6775c (patch) | |
| tree | 33e6bdc5907a0dc71e8caeb5ae1556f943837fce /src/3rdparty/harfbuzz | |
| parent | 7ddf40aa71ca0adb7846bf8b0df2240a3870d894 (diff) | |
| download | Qt-9ae6f2f9a57f0c3096d5785913e437953fa6775c.zip Qt-9ae6f2f9a57f0c3096d5785913e437953fa6775c.tar.gz Qt-9ae6f2f9a57f0c3096d5785913e437953fa6775c.tar.bz2 | |
Check for buffer overflow in Lookup_MarkMarkPos
That may cause crash in this function with certain fonts.
Task-number: QTBUG-17238
Done-by: Alberto Garcia <agarcia@igalia.com>
Reviewed-by: Jiang Jiang
Diffstat (limited to 'src/3rdparty/harfbuzz')
| -rw-r--r-- | src/3rdparty/harfbuzz/src/harfbuzz-gpos.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-gpos.c b/src/3rdparty/harfbuzz/src/harfbuzz-gpos.c index a216005..7bd3b3b 100644 --- a/src/3rdparty/harfbuzz/src/harfbuzz-gpos.c +++ b/src/3rdparty/harfbuzz/src/harfbuzz-gpos.c @@ -3012,6 +3012,9 @@ static HB_Error Lookup_MarkMarkPos( GPOS_Instance* gpi, j--; } + if ( i > buffer->in_pos ) + return HB_Err_Not_Covered; + error = _HB_OPEN_Coverage_Index( &mmp->Mark2Coverage, IN_GLYPH( j ), &mark2_index ); if ( error ) |