{
  "id": "CVE-2021-47190",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-04-10T19:15:47.617",
  "lastModified": "2025-01-07T17:11:50.810",
  "vulnStatus": "Analyzed",
  "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't 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't\nhappen.\n\nv2. Adds a return -1 when the insertion error occurs in\n    perf_env__fetch_btf. This doesn't 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."
    }
  ],
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    "cvssMetricV31": [
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        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
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          "lang": "en",
          "value": "CWE-401"
        }
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    }
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