FKIE_CVE-2021-47296

Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-06-17 04:17
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preempt notifier corruption and crashes, among other issues.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.14
linux linux_kernel 5.14
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kvm/powerpc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9bafc34dc4ad0cef18727c557f21ed3c3304df50",
              "status": "affected",
              "version": "b3cebfe8c1cadf1817939dcc3688a2504a69c662",
              "versionType": "git"
            },
            {
              "lessThan": "f38527f1890543cdfca8dfd06f75f9887cce6151",
              "status": "affected",
              "version": "b3cebfe8c1cadf1817939dcc3688a2504a69c662",
              "versionType": "git"
            },
            {
              "lessThan": "e14ef1095387f764d95614d3ec9e4d07c82a3533",
              "status": "affected",
              "version": "b3cebfe8c1cadf1817939dcc3688a2504a69c662",
              "versionType": "git"
            },
            {
              "lessThan": "a4a488915feaad38345cc01b80d52e8200ff5209",
              "status": "affected",
              "version": "b3cebfe8c1cadf1817939dcc3688a2504a69c662",
              "versionType": "git"
            },
            {
              "lessThan": "bc4188a2f56e821ea057aca6bf444e138d06c252",
              "status": "affected",
              "version": "b3cebfe8c1cadf1817939dcc3688a2504a69c662",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kvm/powerpc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.13.*",
              "status": "unaffected",
              "version": "5.13.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A14B3FB8-763B-434E-88A7-97AC33E54F7F",
              "versionEndExcluding": "4.19.199",
              "versionStartIncluding": "4.18",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E1FCD98C-8886-4844-B7AF-C42731DF9465",
              "versionEndExcluding": "5.4.136",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1BD5A2EE-859F-40FC-BDAC-167AAE37C870",
              "versionEndExcluding": "5.10.54",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "512C22FC-1524-4E6F-9E62-4F4B7B6E0576",
              "versionEndExcluding": "5.13.6",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "71268287-21A8-4488-AA4F-23C473153131",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "23B9E5C6-FAB5-4A02-9E39-27C8787B0991",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak\n\nvcpu_put is not called if the user copy fails. This can result in preempt\nnotifier corruption and crashes, among other issues."
    },
    {
      "lang": "es",
      "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KVM: PPC: correcci\u00f3n de fuga de kvm_arch_vcpu_ioctl vcpu_load. No se llama a vcpu_put si falla la copia del usuario. Esto puede provocar da\u00f1os y bloqueos del notificador preventivo, entre otros problemas."
    }
  ],
  "id": "CVE-2021-47296",
  "lastModified": "2026-06-17T04:17:07.820",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47296",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-28T19:22:38.048038Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-21T15:15:17.477",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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