WID-SEC-W-2026-3312
Vulnerability from csaf_certbund - Published: 2026-09-10 22:00 - Updated: 2026-09-28 22:00Summary
libvirt: Schwachstelle ermöglicht Privilegieneskalation
Severity
Hoch
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: Libvirt ist eine Bibliothek, die Schnittstellen zu den Virtualisierungsfunktionen von Linux anbietet und Werkzeuge zur Verwaltung von virtualisierten Systemen zur Verfügung stellt.
Angriff: Ein lokaler Angreifer kann eine Schwachstelle in libvirt ausnutzen, um seine Privilegien zu erhöhen.
Betroffene Betriebssysteme: - Linux
- UNIX
Affected products
Known affected
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Ubuntu Linux
Ubuntu
|
cpe:/o:canonical:ubuntu_linux:-
|
— | |
|
Amazon Linux 2
Amazon
|
cpe:/o:amazon:linux_2:-
|
— | |
|
SUSE Linux
SUSE
|
cpe:/o:suse:suse_linux:-
|
— | |
|
Open Source libvirt
Open Source
|
cpe:/a:redhat:libvirt:-
|
— |
References
15 references
{
"document": {
"aggregate_severity": {
"text": "hoch"
},
"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": "Libvirt ist eine Bibliothek, die Schnittstellen zu den Virtualisierungsfunktionen von Linux anbietet und Werkzeuge zur Verwaltung von virtualisierten Systemen zur Verf\u00fcgung stellt.",
"title": "Produktbeschreibung"
},
{
"category": "summary",
"text": "Ein lokaler Angreifer kann eine Schwachstelle in libvirt ausnutzen, um seine Privilegien zu erh\u00f6hen.",
"title": "Angriff"
},
{
"category": "general",
"text": "- Linux\n- UNIX",
"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-2026-3312 - CSAF Version",
"url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3312.json"
},
{
"category": "self",
"summary": "WID-SEC-2026-3312 - Portal Version",
"url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3312"
},
{
"category": "external",
"summary": "Red Hat Bugtracker 2531811 vom 2026-09-10",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531811"
},
{
"category": "external",
"summary": "SuSE Security Advisory vom 2026-09-10",
"url": "https://www.suse.com/security/cve/CVE-2026-77159.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4004-1 vom 2026-09-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/028886.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4010-1 vom 2026-09-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/028880.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4009-1 vom 2026-09-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/028881.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:23445-1 vom 2026-09-12",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/028817.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:23460-1 vom 2026-09-13",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/028978.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:23515-1 vom 2026-09-15",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029035.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:23603-1 vom 2026-09-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029087.html"
},
{
"category": "external",
"summary": "SUSE Security Update SUSE-SU-2026:4141-1 vom 2026-09-16",
"url": "https://lists.suse.com/pipermail/sle-security-updates/2026-September/029054.html"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8831-1 vom 2026-09-28",
"url": "https://ubuntu.com/security/notices/USN-8831-1"
},
{
"category": "external",
"summary": "Ubuntu Security Notice USN-8833-1 vom 2026-09-28",
"url": "https://ubuntu.com/security/notices/USN-8833-1"
},
{
"category": "external",
"summary": "Amazon Linux Security Advisory ALAS2-2026-3932 vom 2026-09-29",
"url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3932.html"
}
],
"source_lang": "en-US",
"title": "libvirt: Schwachstelle erm\u00f6glicht Privilegieneskalation",
"tracking": {
"current_release_date": "2026-09-28T22:00:00.000+00:00",
"generator": {
"date": "2026-09-29T08:49:51.895+00:00",
"engine": {
"name": "BSI-WID",
"version": "1.6.0"
}
},
"id": "WID-SEC-W-2026-3312",
"initial_release_date": "2026-09-10T22:00:00.000+00:00",
"revision_history": [
{
"date": "2026-09-10T22:00:00.000+00:00",
"number": "1",
"summary": "Initiale Fassung"
},
{
"date": "2026-09-13T22:00:00.000+00:00",
"number": "2",
"summary": "Neue Updates von SUSE und European Union Vulnerability Database aufgenommen"
},
{
"date": "2026-09-15T22:00:00.000+00:00",
"number": "3",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-09-16T22:00:00.000+00:00",
"number": "4",
"summary": "Neue Updates von SUSE aufgenommen"
},
{
"date": "2026-09-28T22:00:00.000+00:00",
"number": "5",
"summary": "Neue Updates von Ubuntu und Amazon aufgenommen"
}
],
"status": "final",
"version": "5"
}
},
"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": "Open Source libvirt",
"product": {
"name": "Open Source libvirt",
"product_id": "T058446",
"product_identification_helper": {
"cpe": "cpe:/a:redhat:libvirt:-"
}
}
}
],
"category": "vendor",
"name": "Open Source"
},
{
"branches": [
{
"category": "product_name",
"name": "SUSE Linux",
"product": {
"name": "SUSE Linux",
"product_id": "T054646",
"product_identification_helper": {
"cpe": "cpe:/o:suse:suse_linux:-"
}
}
}
],
"category": "vendor",
"name": "SUSE"
},
{
"branches": [
{
"category": "product_name",
"name": "Ubuntu Linux",
"product": {
"name": "Ubuntu Linux",
"product_id": "T055947",
"product_identification_helper": {
"cpe": "cpe:/o:canonical:ubuntu_linux:-"
}
}
}
],
"category": "vendor",
"name": "Ubuntu"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-77159",
"product_status": {
"known_affected": [
"T055947",
"398363",
"T054646",
"T058446"
]
},
"release_date": "2026-09-10T22:00:00.000+00:00",
"title": "CVE-2026-77159"
}
]
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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