Description
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| systemd | systemd | 233 – < 260 | 260 |
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 | systemd | 260~rc3-1 | — |
| Debian 13 | systemd | 257.13-1~deb13u1 | — |
| Debian 12 | systemd | 252.39-1~deb12u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | systemd | 257.9-0ubuntu2.5 | USN-8402-1 |
| Ubuntu 24.04 LTS | systemd | 255.4-1ubuntu8.16 | USN-8402-1 |
| Ubuntu 22.04 LTS | systemd | 249.11-0ubuntu3.21 | USN-8402-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | systemd | No fix yet | — |
| Ubuntu Pro 18.04 LTS | systemd | No fix yet | — |
| Ubuntu Pro 16.04 LTS | systemd | No fix yet | — |
| Ubuntu Pro 14.04 LTS | systemd | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | systemd +20 | 260.1-2.1.hum1 | RHSA-2026:7299 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | systemd | 254.27-150600.4.71.2 | SUSE-SU-2026:3244-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | systemd | 257.13-160000.4.1 | SUSE-SU-2026:23620-1 |
| SLES 16.0 | systemd | 257.13-160000.4.1 | SUSE-SU-2026:23620-1 |
| SLE Micro 6.2 | systemd | 257.13-160000.4.1 | SUSE-SU-2026:23470-1, SUSE-SU-2026:23454-1 |
| SLE Micro 6.1 | systemd | 254.27-slfo.1.1_5.1 | SUSE-SU-2026:22890-1 |
| SLE Micro 6.0 | systemd | 254.27-4.1 | SUSE-SU-2026:22736-1 |
| SLE Micro 5.5 | systemd | 249.17-150400.8.64.1 | SUSE-SU-2026:2809-1 |
| SLE Micro 5.4 | systemd | 249.17-150400.8.64.1 | SUSE-SU-2026:2809-1 |
| SLE Micro 5.3 | systemd | 249.17-150400.8.64.1 | SUSE-SU-2026:2809-1 |
| SLE Micro 5.2 | systemd | 246.16-150300.7.74.1 | SUSE-SU-2026:2785-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | systemd +1 | 257.13-160000.4.1 | openSUSE-SU-2026:21754-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | systemd | 255-30 | — |
Advisories 12
- RHSA-2026:7299 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SUSE-SU-2026:23620-1 Security update for systemd SUSE / openSUSE Security Updates · Sep 29, 2026
- WID-SEC-2026-0720 systemd: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 16, 2026
- SUSE-SU-2026:23470-1 Security update for systemd SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:23454-1 Security update for systemd SUSE / openSUSE Security Updates · Sep 14, 2026
- openSUSE-SU-2026:21754-1 Security update for systemd SUSE / openSUSE Security Updates · Sep 9, 2026
- SUSE-SU-2026:3244-1 Security update for systemd SUSE / openSUSE Security Updates · Jul 28, 2026
- SUSE-SU-2026:22890-1 Security update for systemd SUSE / openSUSE Security Updates · Jul 28, 2026
- SUSE-SU-2026:22736-1 Security update for systemd SUSE / openSUSE Security Updates · Jul 22, 2026
- SUSE-SU-2026:2809-1 Security update for systemd SUSE / openSUSE Security Updates · Jul 10, 2026
- SUSE-SU-2026:2785-1 Security update for systemd, systemd-mini SUSE / openSUSE Security Updates · Jul 9, 2026
- USN-8402-1 systemd vulnerabilities Ubuntu Security Notices (USN) · Jun 8, 2026