FKIE_CVE-2018-10853
Vulnerability from fkie_nvd - Published: 2018-09-11 14:29 - Updated: 2026-06-17 01:34
Severity
7.0 (High) - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.0/
Summary
A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| canonical | ubuntu_linux | 16.04 | |
| canonical | ubuntu_linux | 18.04 | |
| debian | debian_linux | 8.0 | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"product": "kernel",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.18"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
{
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"vulnerable": true
},
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest."
},
{
"lang": "es",
"value": "Se ha encontrado un error en la forma en la que el hipervisor KVM del kernel de Linux en versiones anteriores a la 4.18 emulaba instrucciones como sgdt/sidt/fxsave/fxrstor. No comprob\u00f3 el nivel de privilegios actual (CPL) al emular instrucciones sin privilegios. Un usuario invitado o un proceso sin privilegios podr\u00edan emplear este error para escalar sus privilegios en el invitado."
}
],
"id": "CVE-2018-10853",
"lastModified": "2026-06-17T01:34:45.953",
"metrics": {
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{
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"baseSeverity": "MEDIUM",
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"accessVector": "LOCAL",
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"version": "2.0"
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"impactScore": 6.4,
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"source": "nvd@nist.gov",
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"cvssMetricV30": [
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
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"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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{
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},
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"impactScore": 5.9,
"source": "nvd@nist.gov",
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]
},
"published": "2018-09-11T14:29:01.630",
"references": [
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{
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]
}
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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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