Red Hat Enterprise Linux (crun): Schwachstelle ermöglicht Privilegieneskalation
WID-SEC-2026-0966 · first 07.04.2026 · updated 30.07.2026 · CVSS 7,8
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein lokaler Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux (crun) ausnutzen, um seine Privilegien zu erhöhen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
What can happen in the worst case
An attacker could use the vulnerability to
- seine Privilegien zu erhöhen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Oracle Linux
- Red Hat OpenShift Container Platform
- SUSE openSUSE
- RESF Rocky Linux
- Red Hat Enterprise Linux <10
- Red Hat Enterprise Linux <9
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Red Hat Security Advisory RHSA-2026:6621 vom 2026-04-06 access.redhat.com
- Red Hat Security Advisory RHSA-2026:6622 vom 2026-04-06 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-6621 vom 2026-04-07 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:6621 vom 2026-04-08 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-6622 vom 2026-04-07 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:6622 vom 2026-04-09 errata.build.resf.org
- openSUSE Security Update OPENSUSE-SU-2026:10524-1 vom 2026-04-11 lists.opensuse.org
- Red Hat Security Advisory RHSA-2026:19020 vom 2026-05-19 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:19178 vom 2026-05-20 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:19178 vom 2026-05-19 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:19020 vom 2026-05-29 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:28036 vom 2026-06-22 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-19178 vom 2026-06-23 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:34757 vom 2026-07-09 access.redhat.com
- Red Hat Security Advisory RHSA-2026:47905 vom 2026-07-30 access.redhat.com
CVE: CVE-2026-30892
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.