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CVE-2024-36953 (GCVE-0-2024-36953)

Vulnerability from cvelistv5 – Published: 2024-05-30 15:35 – Updated: 2026-05-11 20:17
VLAI
Title
KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr()
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr() vgic_v2_parse_attr() is responsible for finding the vCPU that matches the user-provided CPUID, which (of course) may not be valid. If the ID is invalid, kvm_get_vcpu_by_id() returns NULL, which isn't handled gracefully. Similar to the GICv3 uaccess flow, check that kvm_get_vcpu_by_id() actually returns something and fail the ioctl if not.
Severity
4.4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-31 18:25 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7d450e2821710718fd6703e9c486249cee913bab , < 4404465a1bee3607ad90a4c5f9e16dfd75b85728 (git)
Affected: 7d450e2821710718fd6703e9c486249cee913bab , < 17db92da8be5dd3bf63c01f4109fe47db64fc66f (git)
Affected: 7d450e2821710718fd6703e9c486249cee913bab , < 3a5b0378ac6776c7c31b18e0f3c1389bd6005e80 (git)
Affected: 7d450e2821710718fd6703e9c486249cee913bab , < 8d6a1c8e3de36cb0f5e866f1a582b00939e23104 (git)
Affected: 7d450e2821710718fd6703e9c486249cee913bab , < 01981276d64e542c177b243f7c979fee855d5487 (git)
Affected: 7d450e2821710718fd6703e9c486249cee913bab , < 6ddb4f372fc63210034b903d96ebbeb3c7195adb (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.10.217 , ≤ 5.10.* (semver)
Unaffected: 5.15.159 , ≤ 5.15.* (semver)
Unaffected: 6.1.91 , ≤ 6.1.* (semver)
Unaffected: 6.6.31 , ≤ 6.6.* (semver)
Unaffected: 6.8.10 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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De manera similar al flujo de uaccess de GICv3, verifique que kvm_get_vcpu_by_id() realmente devuelva algo y falle el ioctl si 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:55:35+00:00",
      "cve": "CVE-2024-36953",
      "id": "CVE-2024-36953",
      "initial_release_date": "2024-05-30T00:00:00+00:00",
      "product_status:fixed": "150",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "136",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-36953.json",
      "version": "3"
    },
    "vulnrichment": {
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been resolved:\\n\\nKVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr()\\n\\nvgic_v2_parse_attr() is responsible for finding the vCPU that matches\\nthe user-provided CPUID, which (of course) may not be valid. If the ID\\nis invalid, kvm_get_vcpu_by_id() returns NULL, which isn\u0027t handled\\ngracefully.\\n\\nSimilar to the GICv3 uaccess flow, check that kvm_get_vcpu_by_id()\\nactually returns something and fail the ioctl if not.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-05T09:28:43.213Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-36953\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-05T09:28:43.213Z\", \"dateReserved\": \"2024-05-30T15:25:07.080Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-30T15:35:48.070Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.