fkie_cve-2024-36953
Vulnerability from fkie_nvd
Published
2024-05-30 16:15
Modified
2024-11-21 09:22
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66f
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adb
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has 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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: KVM: arm64: vgic-v2: Verifique vCPU que no sea NULL en vgic_v2_parse_attr() vgic_v2_parse_attr() es responsable de encontrar la vCPU que coincida con el CPUID proporcionado por el usuario, que (de curso) puede no ser v\u00e1lido. Si el ID no es v\u00e1lido, kvm_get_vcpu_by_id() devuelve NULL, que no se maneja correctamente. De manera similar al flujo de uaccess de GICv3, verifique que kvm_get_vcpu_by_id() realmente devuelva algo y falle el ioctl si no."
    }
  ],
  "id": "CVE-2024-36953",
  "lastModified": "2024-11-21T09:22:53.767",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-05-30T16:15:18.233",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/01981276d64e542c177b243f7c979fee855d5487"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/17db92da8be5dd3bf63c01f4109fe47db64fc66f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/3a5b0378ac6776c7c31b18e0f3c1389bd6005e80"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/4404465a1bee3607ad90a4c5f9e16dfd75b85728"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/6ddb4f372fc63210034b903d96ebbeb3c7195adb"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://git.kernel.org/stable/c/8d6a1c8e3de36cb0f5e866f1a582b00939e23104"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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