PT-2026-31935 · Systemd · Systemd-Nspawn

Published 2026-04-10 · Updated 2026-05-15 · CVE-2026-40226

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions systemd versions 233 through 259

Description A flaw in nspawn allows an escape-to-host action to occur through the use of a crafted optional configuration file.

Recommendations Update to version 260.

Fix

Weakness Enumeration

CWE-348

Related Identifiers

CVE-2026-40226

ECHO-918A-FD9A-B2CD

OESA-2026-2277

OESA-2026-2278

OESA-2026-2279

OESA-2026-2280

OESA-2026-2358

RHSA-2026:7299

Affected Products

Systemd-Nspawn

References · 18

• https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40226 · Security Note
• https://ubuntu.com/security/CVE-2026-40226 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2280 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-12-CVE-2026-40226 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2358 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-40226 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2278 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2279 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-2277 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-40226 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-40226 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-40226 · Vendor Advisory
• https://openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2277 · Note
• https://openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2279 · Note