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.
Metrics
CVSS 3.1 4.3/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- https://bugreports.qt.io/browse/QTBUG-77819Permissions Required
- https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784Issue Tracking, Third Party Advisory
- https://codereview.qt-project.org/c/qt/qtbase/+/271889Patch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Nov/4Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-60
- https://usn.ubuntu.com/4275-1/
- https://www.debian.org/security/2019/dsa-4556Third Party Advisory
- https://bugreports.qt.io/browse/QTBUG-77819Permissions Required
- https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784Issue Tracking, Third Party Advisory
- https://codereview.qt-project.org/c/qt/qtbase/+/271889Patch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Nov/4Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-60
- https://usn.ubuntu.com/4275-1/
- https://www.debian.org/security/2019/dsa-4556Third Party Advisory
Timeline
- Published
- Oct 23, 2019
- Last modified
- Jun 17, 2026
- NVD status
- Modified