CVE-2025-26601 · cross-distro fix matrix

CVE-2025-26601: A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return ear

Affects 5 Linux releases across 8 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-26601 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

xorg-server→ fixed in2:1.20.11-1+deb11u15urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xorg-server
```

Debian bookworm

Source: Debian Security Tracker

xorg-server→ fixed in2:21.1.7-3+deb12u9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xorg-server
```

Debian trixie

Source: Debian Security Tracker

xorg-server→ fixed in2:21.1.16-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xorg-server
```
xwayland→ fixed in2:24.1.6-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xwayland
```

Alpine v3.21

Source: Alpine secdb

xorg-server→ fixed in21.1.16-r0

apk update && apk add --upgrade xorg-server

xwayland→ fixed in24.1.6-r0

apk update && apk add --upgrade xwayland

Alpine edge

Source: Alpine secdb

xorg-server→ fixed in21.1.16-r0

apk update && apk add --upgrade xorg-server

xwayland→ fixed in24.1.6-r0

apk update && apk add --upgrade xwayland

Are YOU affected by CVE-2025-26601?

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

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