CVE-2026-4948 · cross-distro fix matrix

CVE-2026-4948: A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leadi

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

Fix per ecosystem

Each block below is a distro release where CVE-2026-4948 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

firewalld→ fixed in0.9.3-2+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firewalld
```

Debian bookworm

Source: Debian Security Tracker

firewalld→ fixed in1.3.3-1~deb12u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firewalld
```

Debian trixie

Source: Debian Security Tracker

firewalld→ fixed in2.3.1-1+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firewalld
```

Are YOU affected by CVE-2026-4948?

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-2026-4948dropped 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. From $9/mo, 14-day free trial, cancel anytime.

See StackPatch (from $9/mo)