{
  "id": "CVE-2022-49549",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-02-26T07:01:30.773",
  "lastModified": "2025-03-10T21:22:55.893",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/MCE/AMD: Fix memory leak when threshold_create_bank() fails\n\nIn mce_threshold_create_device(), if threshold_create_bank() fails, the\npreviously allocated threshold banks array @bp will be leaked because\nthe call to mce_threshold_remove_device() will not free it.\n\nThis happens because mce_threshold_remove_device() fetches the pointer\nthrough the threshold_banks per-CPU variable but bp is written there\nonly after the bank creation is successful, and not before, when\nthreshold_create_bank() fails.\n\nAdd a helper which unwinds all the bank creation work previously done\nand pass into it the previously allocated threshold banks array for\nfreeing.\n\n  [ bp: Massage. ]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: x86/MCE/AMD: Se corrige la p\u00e9rdida de memoria cuando falla el umbral_create_bank() En mce_threshold_create_device(), si falla el umbral_create_bank(), la matriz de bancos de umbral previamente asignada @bp se filtrar\u00e1 porque la llamada a mce_threshold_remove_device() no la liberar\u00e1. Esto sucede porque mce_threshold_remove_device() obtiene el puntero a trav\u00e9s de la variable por CPU del umbral_banks, pero bp se escribe all\u00ed solo despu\u00e9s de que la creaci\u00f3n del banco sea exitosa, y no antes, cuando falla el umbral_create_bank(). Agregue un asistente que desenrolle todo el trabajo de creaci\u00f3n de bancos previamente realizado y le pase la matriz de bancos de umbral previamente asignada para liberar. [ bp: Masaje. ]"
    }
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          "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
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