Description
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, leading to unauthorized changes in network security configurations.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firewalld | 2.4.0-2 | — |
| Debian 13 | firewalld | 2.3.1-1+deb13u1 | — |
| Debian 12 | firewalld | 1.3.3-1~deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | firewalld | No fix yet | — |
| Ubuntu 26.04 LTS | firewalld | No fix yet | — |
| Ubuntu 25.10 | firewalld | No fix yet | — |
| Ubuntu 24.04 LTS | firewalld | No fix yet | — |
| Ubuntu 22.04 LTS | firewalld | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | firewalld | No fix yet | — |
| Ubuntu 18.04 LTS | firewalld | No fix yet | — |
| Ubuntu 16.04 LTS | firewalld | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | firewalld +4 | 2.4.2-1.el10_2 | RHBA-2026:28238 |
| RHEL 9 | firewalld +4 | 1.3.4-20.el9_8 | RHSA-2026:67585 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | firewalld +4 | 2.3.1-1.el10_0.1 | RHSA-2026:67843 |
| RHEL 9.6 EUS | firewalld +4 | 1.3.4-15.el9_6.1 | RHSA-2026:76844 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firewalld +4 | 1.3.4-20.el9_8 | ALSA-2026:67585 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | firewalld | 1.3.4-20.el9_8 | RLSA-2026:67585 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | firewalld | 1.3.4-150600.13.6.1 | SUSE-SU-2026:2745-1 |
| SLES 3 | firewalld | 1.3.4-150600.13.6.1 | SUSE-SU-2026:2745-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | firewalld | 2.1.2-160000.3.1 | SUSE-SU-2026:22343-1 |
| SLES 16.0 | firewalld | 2.1.2-160000.3.1 | SUSE-SU-2026:22343-1 |
| SLE Micro 6.2 | firewalld | 2.1.2-160000.3.1 | SUSE-SU-2026:22263-1 |
| SLE Micro 6.1 | firewalld | 2.0.0-slfo.1.1_2.1 | SUSE-SU-2026:22060-1 |
| SLE Micro 6.0 | rpcbind | 1.2.9-1.1 | SUSE-SU-2026:22060-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | firewalld | 2.3.2-2.1 | openSUSE-SU-2026:11289-1 |
| openSUSE Leap 16.0 | firewalld | 2.1.2-160000.3.1 | openSUSE-SU-2026:21032-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | firewalld +3 | 1.2.3-1.amzn2023.0.2 | ALAS2023-2026-1636 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | firewalld | 2.0.2-4 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firewalld +4 | 1.3.4-20.0.1.el9_8 | ELSA-2026-67585 |
Advisories 15
- WID-SEC-2026-3382 Red Hat Enterprise Linux (firewalld, leapp-repository, tesseract): Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 29, 2026
- ALSA-2026:67585 Moderate: firewalld security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:76844 Red Hat Security Advisory: firewalld security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:67843 Red Hat Security Advisory: firewalld security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHSA-2026:67585 Red Hat Security Advisory: firewalld security update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RHBA-2026:28238 Red Hat Bug Fix Advisory: firewalld bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 7, 2026
- RLSA-2026:67585 Moderate: firewalld security update Rocky Linux Security Advisories · Sep 17, 2026
- ELSA-2026-67585 Moderate: firewalld security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 16, 2026
- openSUSE-SU-2026:11289-1 firewall-applet-2.3.2-2.1 on GA media SUSE / openSUSE Security Updates · Jul 18, 2026
- SUSE-SU-2026:2745-1 Security update for firewalld-legacy SUSE / openSUSE Security Updates · Jul 4, 2026
- SUSE-SU-2026:22343-1 Security update for firewalld SUSE / openSUSE Security Updates · Jul 2, 2026
- SUSE-SU-2026:22263-1 Security update for firewalld SUSE / openSUSE Security Updates · Jun 30, 2026
- openSUSE-SU-2026:21032-1 Security update for firewalld SUSE / openSUSE Security Updates · Jun 30, 2026
- SUSE-SU-2026:22060-1 Security update for firewalld SUSE / openSUSE Security Updates · Jun 13, 2026
- ALAS2023-2026-1636 Moderate: firewalld security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · May 13, 2026
References
- RHBA-2026:28238 vendor-advisory
- RHSA-2026:67585 vendor-advisory
- RHSA-2026:67843 vendor-advisory
- RHSA-2026:76844 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-4948 vdb-entry
- RHBZ#2452086 issue-tracking