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CVE-2018-10853 (GCVE-0-2018-10853)

Vulnerability from cvelistv5 – Published: 2018-09-11 14:00 – Updated: 2024-08-05 07:46
VLAI
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.
Severity
7 (High)
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux kernel Affected: 4.18
guessed Create a notification for this product.
Date Public
2018-06-05 00:00
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      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-250\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-269\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2018-10853\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2018-09-11T14:29:01.630\",\"lastModified\":\"2024-11-21T03:42:08.677\",\"vulnStatus\":\"Modified\",\"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. 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T11:32:38+00:00",
      "cve": "CVE-2018-10853",
      "id": "CVE-2018-10853",
      "initial_release_date": "2018-06-05T00:00:00+00:00",
      "product_status:fixed": "530",
      "product_status:known_not_affected": "75",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kvm: guest userspace to guest kernel write",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-10853.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-08-31T08:45:15Z",
      "cve": "CVE-2018-10853",
      "id": "CVE-2018-10853",
      "initial_release_date": "2023-02-15T04:28:03Z",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "374",
      "product_status:recommended": "777",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-10853",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-10853.json",
      "version": "23"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.