FKIE_CVE-2022-50074

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2026-06-17 05:22
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: apparmor: Fix memleak in aa_simple_write_to_buffer() When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/417ea9fe972d2654a268ad66e89c8fcae67017c3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6500eb3a48ac221051b1791818a1ac74744ef617Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6583edbf459de2e06b9759f264c0ae27e452b97aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7db182a2ebeefded86fea542fcc5d6a68bb77f58Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8aab4295582eb397a125d2788b829fa62b88dbf7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf7ebebce2c25071c719fd8a2f1307e0c243c2d7Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/apparmorfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6500eb3a48ac221051b1791818a1ac74744ef617",
              "status": "affected",
              "version": "a6a52579e52b55448326db88bd9a5740e7c1a037",
              "versionType": "git"
            },
            {
              "lessThan": "7db182a2ebeefded86fea542fcc5d6a68bb77f58",
              "status": "affected",
              "version": "a6a52579e52b55448326db88bd9a5740e7c1a037",
              "versionType": "git"
            },
            {
              "lessThan": "8aab4295582eb397a125d2788b829fa62b88dbf7",
              "status": "affected",
              "version": "a6a52579e52b55448326db88bd9a5740e7c1a037",
              "versionType": "git"
            },
            {
              "lessThan": "bf7ebebce2c25071c719fd8a2f1307e0c243c2d7",
              "status": "affected",
              "version": "a6a52579e52b55448326db88bd9a5740e7c1a037",
              "versionType": "git"
            },
            {
              "lessThan": "6583edbf459de2e06b9759f264c0ae27e452b97a",
              "status": "affected",
              "version": "a6a52579e52b55448326db88bd9a5740e7c1a037",
              "versionType": "git"
            },
            {
              "lessThan": "417ea9fe972d2654a268ad66e89c8fcae67017c3",
              "status": "affected",
              "version": "a6a52579e52b55448326db88bd9a5740e7c1a037",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/apparmorfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.17"
            },
            {
              "lessThan": "4.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.256",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.211",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.138",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5E3D3761-1E6B-4840-8878-B0F9A08675A3",
              "versionEndExcluding": "4.19.256",
              "versionStartIncluding": "4.17",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B1C63D19-C08C-4308-A848-B2523C9275BD",
              "versionEndExcluding": "5.4.211",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "445ACC04-A2BA-4176-B4C9-CA4AA59096D2",
              "versionEndExcluding": "5.10.138",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D5744A03-DA40-4A78-9063-13179361DC6D",
              "versionEndExcluding": "5.15.63",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0E669300-DA42-4ACD-86D8-68BE5F29FB88",
              "versionEndExcluding": "5.19.4",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix memleak in aa_simple_write_to_buffer()\n\nWhen copy_from_user failed, the memory is freed by kvfree. however the\nmanagement struct and data blob are allocated independently, so only\nkvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to\nfix this issue."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: apparmor: Se corrige la fuga de memoria en aa_simple_write_to_buffer(). Cuando copy_from_user falla, kvfree libera la memoria. Sin embargo, la estructura de administraci\u00f3n y el blob de datos se asignan de forma independiente, por lo que solo kvfree(data) causa un problema de fuga de memoria. Utilice aa_put_loaddata(data) para solucionar este problema."
    }
  ],
  "id": "CVE-2022-50074",
  "lastModified": "2026-06-17T05:22:42.403",
  "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"
      }
    ]
  },
  "published": "2025-06-18T11:15:36.283",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/417ea9fe972d2654a268ad66e89c8fcae67017c3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6500eb3a48ac221051b1791818a1ac74744ef617"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/6583edbf459de2e06b9759f264c0ae27e452b97a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7db182a2ebeefded86fea542fcc5d6a68bb77f58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8aab4295582eb397a125d2788b829fa62b88dbf7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/bf7ebebce2c25071c719fd8a2f1307e0c243c2d7"
    }
  ],
  "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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