CVE-2019-18281
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.
| Software | From | Fixed in |
|---|---|---|
| qt / qtbase | 5.11.0 | 5.11.3.x |
| qt / qtbase | 5.12.0 | 5.12.5 |
| debian / debian_linux | 9.0 | 9.0.x |
| debian / debian_linux | 10.0 | 10.0.x |
- https://bugreports.qt.io/browse/QTBUG-77819
- https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784
- https://codereview.qt-project.org/c/qt/qtbase/+/271889
- https://seclists.org/bugtraq/2019/Nov/4
- https://security.gentoo.org/glsa/202003-60
- https://usn.ubuntu.com/4275-1/
- https://www.debian.org/security/2019/dsa-4556
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