fkie_cve-2021-47190
Vulnerability from fkie_nvd
Published
2024-04-10 19:15
Modified
2025-01-07 17:11
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: perf bpf: Avoid memory leak from perf_env__insert_btf() perf_env__insert_btf() doesn't insert if a duplicate BTF id is encountered and this causes a memory leak. Modify the function to return a success/error value and then free the memory if insertion didn't happen. v2. Adds a return -1 when the insertion error occurs in perf_env__fetch_btf. This doesn't affect anything as the result is never checked.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1EA79351-9450-4ADC-97B7-02437D35FBB6",
              "versionEndExcluding": "5.4.162",
              "versionStartIncluding": "5.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AE501832-500C-4EF1-9489-5C13674F619D",
              "versionEndExcluding": "5.10.82",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2128A085-4C0C-4C1E-9E9C-0DD868E2170F",
              "versionEndExcluding": "5.15.5",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf bpf: Avoid memory leak from perf_env__insert_btf()\n\nperf_env__insert_btf() doesn\u0027t insert if a duplicate BTF id is\nencountered and this causes a memory leak. Modify the function to return\na success/error value and then free the memory if insertion didn\u0027t\nhappen.\n\nv2. Adds a return -1 when the insertion error occurs in\n    perf_env__fetch_btf. This doesn\u0027t affect anything as the result is\n    never checked."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: perf bpf: Evitar p\u00e9rdida de memoria de perf_env__insert_btf() perf_env__insert_btf() no se inserta si se encuentra un ID de BTF duplicado y esto provoca una p\u00e9rdida de memoria. Modifique la funci\u00f3n para que devuelva un valor de \u00e9xito/error y luego libere la memoria si la inserci\u00f3n no ocurri\u00f3. v2. Agrega un retorno -1 cuando ocurre el error de inserci\u00f3n en perf_env__fetch_btf. Esto no afecta a nada ya que el resultado nunca se verifica."
    }
  ],
  "id": "CVE-2021-47190",
  "lastModified": "2025-01-07T17:11:50.810",
  "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": "2024-04-10T19:15:47.617",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "url": "https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e"
    }
  ],
  "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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