Description
An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional characters.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://bugreports.qt.io/browse/QTBUG-77819 ↗
- https://codereview.qt-project.org/c/qt/qtbase/+/271889 ↗
- https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 ↗
- https://www.debian.org/security/2019/dsa-4556 ↗
- https://seclists.org/bugtraq/2019/Nov/4 ↗
- https://usn.ubuntu.com/4275-1/ ↗
- https://security.gentoo.org/glsa/202003-60 ↗