WID-SEC-W-2026-2481
Vulnerability from csaf_certbund - Published: 2026-07-22 22:00 - Updated: 2026-08-10 22:00Summary
Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation
Severity
Mittel
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Der Kernel stellt den Kern des Linux Betriebssystems dar.
Angriff: Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um seine Privilegien zu erhöhen.
Betroffene Betriebssysteme: - Linux
Affected products
Known affected
5 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Oracle Linux
Oracle
|
cpe:/o:oracle:linux:-
|
— | |
|
Debian Linux
Debian
|
cpe:/o:debian:debian_linux:-
|
— | |
|
SUSE openSUSE
SUSE
|
cpe:/o:suse:opensuse:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
Red Hat Enterprise Linux
Red Hat
|
cpe:/o:redhat:enterprise_linux:-
|
— |
References
31 references
{
"document": {
"aggregate_severity": {
"text": "mittel"
},
"category": "csaf_base",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "de-DE",
"notes": [
{
"category": "legal_disclaimer",
"text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
},
{
"category": "description",
"text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um seine Privilegien zu erh\u00f6hen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux",
"title": "Betroffene Betriebssysteme"
}
],
"publisher": {
"category": "other",
"contact_details": "csaf-provider@cert-bund.de",
"name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
"namespace": "https://www.bsi.bund.de"
},
"references": [
{
"category": "self",
"summary": "WID-SEC-W-2026-2481 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2481.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-2481 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2481"
},
{
"category": "external",
"summary": "Qualys Threat Research Blog vom 2026-07-22",
"url": "https://blog.qualys.com/vulnerabilities-threat-research/2026/07/22/refluxfs-a-linux-kernel-local-privilege-escalation-to-root-in-xfs-cve-2026-64600"
},
{
"category": "external",
"summary": "Qualys Security Advisory vom 2026-07-22",
"url": "https://cdn2.qualys.com/advisory/2026/07/22/RefluXFS.txt"
},
{
"category": "external",
"summary": "Red Hat Customer Portal vom 2026-07-22",
"url": "https://access.redhat.com/security/cve/cve-2026-64600"
},
{
"category": "external",
"summary": "Red Hat Bugzilla Bug 2498915 vom 2026-07-22",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498915"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:39179 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:39179"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:39180 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:39180"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:39494 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:39494"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:39984 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:39984"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:40425 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:40425"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:41062 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:41062"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:41063 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:41063"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:41229 vom 2026-07-22",
"url": "https://access.redhat.com/errata/RHSA-2026:41229"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:46951 vom 2026-07-27",
"url": "https://access.redhat.com/errata/RHSA-2026:46951"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2-2026-3835 vom 2026-07-28",
"url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3835.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.10-2026-127 vom 2026-07-28",
"url": "https://alas.aws.amazon.com/AL2/ALAS2KERNEL-5.10-2026-127.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.15-2026-112 vom 2026-07-28",
"url": "https://alas.aws.amazon.com/AL2/ALAS2KERNEL-5.15-2026-112.html"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2KERNEL-5.4-2026-127 vom 2026-07-28",
"url": "https://alas.aws.amazon.com/AL2/ALAS2KERNEL-5.4-2026-127.html"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:47983 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:47983"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:48016 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:48016"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:47998 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:47998"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:47981 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:47981"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:47997 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:47997"
},
{
"category": "external",
"summary": "Red Hat Security Advisory RHSA-2026:47984 vom 2026-07-29",
"url": "https://access.redhat.com/errata/RHSA-2026:47984"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-500121 vom 2026-08-04",
"url": "https://linux.oracle.com/errata/ELSA-2026-500121.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-4720 vom 2026-08-05",
"url": "https://lists.debian.org/debian-lts-announce/2026/08/msg00008.html"
},
{
"category": "external",
"summary": "Oracle Linux Security Advisory ELSA-2026-500136 vom 2026-08-07",
"url": "http://linux.oracle.com/errata/ELSA-2026-500136.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-4723 vom 2026-08-08",
"url": "https://lists.debian.org/debian-lts-announce/2026/08/msg00013.html"
},
{
"category": "external",
"summary": "Debian Security Advisory DLA-4724 vom 2026-08-08",
"url": "https://lists.debian.org/debian-lts-announce/2026/08/msg00014.html"
},
{
"category": "external",
"summary": "openSUSE Security Update OPENSUSE-SU-2026:11476-1 vom 2026-08-10",
"url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/4IVL5FW6PHMMMUN3JJLKHIONSLZGOPQ2/"
}
],
"source_lang": "en-US",
"title": "Linux Kernel: Schwachstelle erm\u00f6glicht Privilegieneskalation",
"tracking": {
"current_release_date": "2026-08-10T22:00:00.000+00:00",
"generator": {
"date": "2026-08-11T08:56:45.607+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-2481",
"initial_release_date": "2026-07-22T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-07-22T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-07-27T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von Red Hat und Amazon aufgenommen"
},
{
"date": "2026-07-29T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von Red Hat aufgenommen"
},
{
"date": "2026-08-04T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-08-05T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2026-08-06T22:00:00.000+00:00",
"number": "6",
"summary": "Neue Updates von Oracle Linux aufgenommen"
},
{
"date": "2026-08-09T22:00:00.000+00:00",
"number": "7",
"summary": "Neue Updates von Debian aufgenommen"
},
{
"date": "2026-08-10T22:00:00.000+00:00",
"number": "8",
"summary": "Neue Updates von openSUSE aufgenommen"
}
],
"status": "final",
"version": "8"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Amazon Linux 2",
"product": {
"name": "Amazon Linux 2",
"product_id": "398363",
"product_identification_helper": {
"cpe": "cpe:/o:amazon:linux_2:-"
}
}
}
],
"category": "vendor",
"name": "Amazon"
},
{
"branches": [
{
"category": "product_name",
"name": "Debian Linux",
"product": {
"name": "Debian Linux",
"product_id": "2951",
"product_identification_helper": {
"cpe": "cpe:/o:debian:debian_linux:-"
}
}
}
],
"category": "vendor",
"name": "Debian"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003e=4.11",
"product": {
"name": "Open Source Linux Kernel \u003e=4.11",
"product_id": "980465"
}
},
{
"category": "product_version_range",
"name": "\u003e=4.11",
"product": {
"name": "Open Source Linux Kernel \u003e=4.11",
"product_id": "980465-fixed"
}
}
],
"category": "product_name",
"name": "Linux Kernel"
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "Oracle Linux",
"product": {
"name": "Oracle Linux",
"product_id": "T056236",
"product_identification_helper": {
"cpe": "cpe:/o:oracle:linux:-"
}
}
}
],
"category": "vendor",
"name": "Oracle"
},
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Enterprise Linux",
"product": {
"name": "Red Hat Enterprise Linux",
"product_id": "T054543",
"product_identification_helper": {
"cpe": "cpe:/o:redhat:enterprise_linux:-"
}
}
}
],
"category": "vendor",
"name": "Red Hat"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE openSUSE",
"product": {
"name": "SUSE openSUSE",
"product_id": "T055946",
"product_identification_helper": {
"cpe": "cpe:/o:suse:opensuse:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-64600",
"product_status": {
"known_affected": [
"T056236",
"2951",
"T055946",
"398363",
"T054543"
]
},
"release_date": "2026-07-22T22:00:00.000+00:00",
"title": "CVE-2026-64600"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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