It seems that the links were incorrect in my previous email so here is the 
whole thing again with the correct links. Apologies for any inconvenience 
caused!


An issue on Windows with the GDI font engine has been reported and has been 
assigned the CVE id CVE-2023-43114.

When corrupt font data is passed to the GDI font engine via 
QFontDatabase::addApplicationFont[FromData] then it can trigger a crash in the 
application.

Solution: As a workaround, validate that the font is safe to use beforehand. Or 
apply the following patch or update to Qt 5.15.16, Qt 6.2.10, Qt 6.5.3, Qt 6.6.0

Patches:

dev: https://codereview.qt-project.org/c/qt/qtbase/+/503026
6.5: https://download.qt.io/official_releases/qt/6.5/CVE-2023-43114-6.5.patch
6.2: https://download.qt.io/official_releases/qt/6.2/CVE-2023-43114-6.2.patch
5.15: https://download.qt.io/official_releases/qt/5.15/CVE-2023-43114-5.15.patch

An issue in the libwebp library has been recently reported and assigned the CVE 
id CVE-2023-4863.

When a malicious WebP image is passed to the library then it can cause a buffer 
overflow.

Solution: As a workaround, update the WebP library manually to 1.3.2 and 
rebuild the imageformat plugin. Alternatively, apply the corresponding patch or 
update to Qt 5.15.16, Qt 6.2.10, Qt 6.5.3, Qt 6.6.0

Patches:

dev: https://codereview.qt-project.org/c/qt/qtimageformats/+/504175
6.5: https://download.qt.io/official_releases/qt/6.5/CVE-2023-4863-6.5.patch
6.2: https://download.qt.io/official_releases/qt/6.2/CVE-2023-4863-6.2.patch
5.15: https://download.qt.io/official_releases/qt/5.15/CVE-2023-4863-5.15.patch
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