Linux Kernel: Mehrere Schwachstellen
WID-SEC-2026-2640 · first 04.08.2026 · updated 29.10.2026 · CVSS 9,8
What it is about
Der Kernel stellt den Kern des Linux Betriebssystems dar. Ein Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um vertrauliche Informationen offenzulegen, Daten zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder seine Rechte zu erweitern.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- vertrauliche Informationen offenzulegen
- Daten zu manipulieren
- einen Denial-of-Service-Zustand zu verursachen oder seine Rechte zu erweitern
Am I affected?
Affected according to the BSI:
- Debian Linux
- Google Cloud Platform
- Amazon Linux 2
- Red Hat Enterprise Linux
- IBM QRadar SIEM
- RESF Rocky Linux
- SUSE Linux
- SUSE openSUSE
- Ubuntu Linux
- Oracle Linux
- Open Source Linux Kernel
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
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)
- Kernel CVE Announce Mailingliste lore.kernel.org
- Linux Kernel CVE Announcement CVE-2026-64561 lore.kernel.org
- Linux Kernel CVE Announcement CVE-2026-64562 lore.kernel.org
- Linux Kernel CVE Announcement CVE-2026-64563 lore.kernel.org
- Linux Kernel CVE Announcement CVE-2026-64564 lore.kernel.org
- Linux Kernel CVE Announcement CVE-2026-64565 lore.kernel.org
- Oracle Linux Security Advisory ELSA-2026-500137 vom 2026-08-07 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-500135 vom 2026-08-07 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-500135 vom 2026-08-06 linux.oracle.com
- Ecploit von Tencent Zhuque Lab vom 2026-08-09 matrix.tencent.com
- Google Cloud Platform Security Bulletin GCP-2026-052 vom 2026-08-08 docs.cloud.google.com
- Debian Security Advisory DSA-6415 vom 2026-08-07 security-tracker.debian.org
- Oracle Linux Security Advisory ELSA-2026-500150 vom 2026-08-11 linux.oracle.com
- openSUSE Security Update OPENSUSE-SU-2026:11476-1 vom 2026-08-10 lists.opensuse.org
- Oracle Linux Security Advisory ELSA-2026-500162 vom 2026-08-11 linux.oracle.com
- SUSE Security Update SUSE-SU-2026:3593-1 vom 2026-08-12 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3594-1 vom 2026-08-12 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3595-1 vom 2026-08-12 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3602-1 vom 2026-08-13 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3617-1 vom 2026-08-14 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3616-1 vom 2026-08-14 lists.suse.com
- SUSE Security Update SUSE-SU-2026:23066-1 vom 2026-08-15 lists.suse.com
- Debian Security Advisory DLA-4745 vom 2026-08-18 lists.debian.org
- SUSE Security Update SUSE-SU-2026:23193-1 vom 2026-08-24 lists.suse.com
- SUSE Security Update SUSE-SU-2026:23183-1 vom 2026-08-25 lists.suse.com
and 191 more sources in the original advisory
CVE: CVE-2026-64561, CVE-2026-64562, CVE-2026-64563, CVE-2026-64564, CVE-2026-64565
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.