CVE-2025-49178 · cross-distro fix matrix

CVE-2025-49178: A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can cause the server to skip processing another client's request, potentially leading to a denial of service.

Affects 4 Linux releases across 5 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-49178 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+deb11u16urgency: 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+deb12u10urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xorg-server
```

Debian trixie

Source: Debian Security Tracker

xorg-server→ fixed in2:21.1.16-1.2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xorg-server
```

Alpine edge

Source: Alpine secdb

xorg-server→ fixed in21.1.17-r0

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

xwayland→ fixed in24.1.7-r0

apk update && apk add --upgrade xwayland

Are YOU affected by CVE-2025-49178?

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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