Check for QImage allocation failure in qasyncimageio.

Since image files easily can be (or corrupt files claim to be) huge,
it is worth checking for out of memory situations.

Based on Qt5 patch for CVE-2018-19870.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit a04cfea092)
r14.0.x
Slávek Banko 6 years ago
parent c966e917a9
commit ac1b4232ff
No known key found for this signature in database
GPG Key ID: 608F5293A04BE668

@ -964,9 +964,12 @@ int QGIFFormat::decode(QImage& img, QImageConsumer* consumer,
if (backingstore.width() < w
|| backingstore.height() < h) {
// We just use the backing store as a byte array
backingstore.create( QMAX(backingstore.width(), w),
QMAX(backingstore.height(), h),
32);
if(!backingstore.create( QMAX(backingstore.width(), w),
QMAX(backingstore.height(), h),
32)) {
state = Error;
return -1;
}
memset( img.bits(), 0, img.numBytes() );
}
for (int ln=0; ln<h; ln++) {

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