1 files changed, 34 insertions, 0 deletions
diff --git a/x11-toolkits/qt4-gui/files/patch-CVE-2015-0295 b/x11-toolkits/qt4-gui/files/patch-CVE-2015-0295
new file mode 100644
index 000000000000..46249856032c
--- /dev/null
+++ b/x11-toolkits/qt4-gui/files/patch-CVE-2015-0295
@@ -0,0 +1,34 @@
+commit e50aa2252cdd5cb53eef7d8c4503c7edff634f68
+Author: Richard J. Moore <rich@kde.org>
+Date:   Tue Feb 24 19:02:35 2015 +0000
+
+    Fix a division by zero when processing malformed BMP files.
+    
+    This fixes a division by 0 when processing a maliciously crafted BMP
+    file. No impact beyond DoS.
+    
+    Backport of 661f6bfd032dacc62841037732816a583640e187
+    
+    Task-number: QTBUG-44547
+    Change-Id: I43f06e752b11cb50669101460902a82b885ae618
+    Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
+
+--- src/gui/image/qbmphandler.cpp
++++ src/gui/image/qbmphandler.cpp
+@@ -319,10 +319,16 @@ static bool read_dib_body(QDataStream &s, const BMP_INFOHDR &bi, int offset, int
+         }
+     } else if (comp == BMP_BITFIELDS && (nbits == 16 || nbits == 32)) {
+         red_shift = calc_shift(red_mask);
++        if (((red_mask >> red_shift) + 1) == 0)
++            return false;
+         red_scale = 256 / ((red_mask >> red_shift) + 1);
+         green_shift = calc_shift(green_mask);
++        if (((green_mask >> green_shift) + 1) == 0)
++            return false;
+         green_scale = 256 / ((green_mask >> green_shift) + 1);
+         blue_shift = calc_shift(blue_mask);
++        if (((blue_mask >> blue_shift) + 1) == 0)
++            return false;
+         blue_scale = 256 / ((blue_mask >> blue_shift) + 1);
+     } else if (comp == BMP_RGB && (nbits == 24 || nbits == 32)) {
+         blue_mask = 0x000000ff;