CVE-2019-18281 · cross-distro fix matrix

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.

Affects 3 Linux releases across 6 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-18281 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

qtbase-opensource-src→ fixed in5.12.5+dfsg-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtbase-opensource-src
```
qtbase-opensource-src-gles→ fixed in5.12.5+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtbase-opensource-src-gles
```

Debian bookworm

Source: Debian Security Tracker

qtbase-opensource-src→ fixed in5.12.5+dfsg-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtbase-opensource-src
```
qtbase-opensource-src-gles→ fixed in5.12.5+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtbase-opensource-src-gles
```

Debian trixie

Source: Debian Security Tracker

qtbase-opensource-src→ fixed in5.12.5+dfsg-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtbase-opensource-src
```
qtbase-opensource-src-gles→ fixed in5.12.5+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtbase-opensource-src-gles
```

Are YOU affected by CVE-2019-18281?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2019-18281dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)