| Name | CVE-2019-18281 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4556-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qtbase-opensource-src (PTS) | jessie, jessie (lts) | 5.3.2+dfsg-4+deb8u7 | fixed |
| stretch (security) | 5.7.1+dfsg-3+deb9u3 | fixed |
| stretch (lts), stretch | 5.7.1+dfsg-3+deb9u5 | fixed |
| buster, buster (lts) | 5.11.3+dfsg1-1+deb10u7 | fixed |
| buster (security) | 5.11.3+dfsg1-1+deb10u6 | fixed |
| bullseye | 5.15.2+dfsg-9+deb11u1 | fixed |
| bookworm | 5.15.8+dfsg-11+deb12u2 | fixed |
| sid, trixie | 5.15.15+dfsg-2 | fixed |
| qtbase-opensource-src-gles (PTS) | bullseye | 5.15.2+dfsg-4 | fixed |
| bookworm | 5.15.8+dfsg-3 | fixed |
| sid, trixie | 5.15.15+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
[buster] - qtbase-opensource-src <no-dsa> (Minor issue)
[stretch] - qtbase-opensource-src <not-affected> (Vulnerable code not present)
[jessie] - qtbase-opensource-src <not-affected> (Vulnerable code not present)
https://github.com/qt/qtbase/commit/af6ac444c97ed2dc234f93fe457440c9da5482ea
https://bugreports.qt.io/browse/QTBUG-77819