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Description: fix CVE-2015-0295, CVE-2015-1858, CVE-2015-1859, CVE-2015-1860
Origin: upstream,
http://code.qt.io/cgit/qt/qtbase.git/commit/?id=661f6bfd032dacc6
http://code.qt.io/cgit/qt/qtbase.git/commit/?id=d3048a29797ee2d8
http://code.qt.io/cgit/qt/qtbase.git/commit/?id=51ec7ebfe5f45d1c
Last-Update: 2015-04-26
--- a/src/gui/image/qbmphandler.cpp
+++ b/src/gui/image/qbmphandler.cpp
@@ -322,12 +322,20 @@
}
} 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);
alpha_shift = calc_shift(alpha_mask);
+ if (((alpha_mask >> alpha_shift) + 1) == 0)
+ return false;
alpha_scale = 256 / ((alpha_mask >> alpha_shift) + 1);
} else if (comp == BMP_RGB && (nbits == 24 || nbits == 32)) {
blue_mask = 0x000000ff;
@@ -484,12 +492,6 @@
p = data + (h-y-1)*bpl;
break;
case 2: // delta (jump)
- // Protection
- if ((uint)x >= (uint)w)
- x = w-1;
- if ((uint)y >= (uint)h)
- y = h-1;
-
{
quint8 tmp;
d->getChar((char *)&tmp);
@@ -497,6 +499,13 @@
d->getChar((char *)&tmp);
y += tmp;
}
+
+ // Protection
+ if ((uint)x >= (uint)w)
+ x = w-1;
+ if ((uint)y >= (uint)h)
+ y = h-1;
+
p = data + (h-y-1)*bpl + x;
break;
default: // absolute mode
--- a/src/gui/image/qgifhandler.cpp
+++ b/src/gui/image/qgifhandler.cpp
@@ -944,6 +944,8 @@
void QGIFFormat::nextY(unsigned char *bits, int bpl)
{
+ if (out_of_bounds)
+ return;
int my;
switch (interlace) {
case 0: // Non-interlaced
--- a/src/plugins/imageformats/ico/qicohandler.cpp
+++ b/src/plugins/imageformats/ico/qicohandler.cpp
@@ -575,7 +575,7 @@
QImage::Format format = QImage::Format_ARGB32;
if (icoAttrib.nbits == 24)
format = QImage::Format_RGB32;
- else if (icoAttrib.ncolors == 2)
+ else if (icoAttrib.ncolors == 2 && icoAttrib.depth == 1)
format = QImage::Format_Mono;
else if (icoAttrib.ncolors > 0)
format = QImage::Format_Indexed8;
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