CVE-2025-27363 · cross-distro fix matrix

CVE-2025-27363: An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a s

Affects 4 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-27363 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

freetype→ fixed in2.10.4+dfsg-1+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y freetype
```

Debian bookworm

Source: Debian Security Tracker

freetype→ fixed in2.12.1+dfsg-5+deb12u4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y freetype
```

Debian trixie

Source: Debian Security Tracker

freetype→ fixed in2.13.1+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y freetype
```

Alpine edge

Source: Alpine secdb

freetype→ fixed in2.13.1-r0

apk update && apk add --upgrade freetype

Are YOU affected by CVE-2025-27363?

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

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Continuous monitoring beats manual checking

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