CVE-2025-31115 · cross-distro fix matrix

CVE-2025-31115: XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder in liblzma has a bug where invalid input can at least result in a crash. The effects include heap use after free and writing to an address based on the

Affects 7 Linux releases across 7 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-31115 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

xz-utils→ fixed in5.4.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xz-utils
```

Debian trixie

Source: Debian Security Tracker

xz-utils→ fixed in5.8.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xz-utils
```

Alpine v3.20

Source: Alpine secdb

xz→ fixed in5.6.2-r1
```
apk update && apk add --upgrade xz
```

Alpine v3.21

Source: Alpine secdb

xz→ fixed in5.6.3-r1
```
apk update && apk add --upgrade xz
```

Alpine edge

Source: Alpine secdb

xz→ fixed in5.8.1-r0
```
apk update && apk add --upgrade xz
```

Alpine v3.18

Source: Alpine secdb

xz→ fixed in5.4.3-r1
```
apk update && apk add --upgrade xz
```

Alpine v3.19

Source: Alpine secdb

xz→ fixed in5.4.5-r1
```
apk update && apk add --upgrade xz
```

Are YOU affected by CVE-2025-31115?

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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