nvd-json-data-feeds/CVE-2022/CVE-2022-495xx/CVE-2022-49549.json

{
  "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. ]"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "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": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.8",
              "versionEndExcluding": "5.10.121",
              "matchCriteriaId": "6EB90EB1-2051-4828-B7F9-DDA87FD914C2"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.11",
              "versionEndExcluding": "5.15.46",
              "matchCriteriaId": "20D41697-0E8B-4B7D-8842-F17BF2AA21E1"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.16",
              "versionEndExcluding": "5.17.14",
              "matchCriteriaId": "15E2DD33-2255-4B76-9C15-04FF8CBAB252"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.18",
              "versionEndExcluding": "5.18.3",
              "matchCriteriaId": "8E122216-2E9E-4B3E-B7B8-D575A45BA3C2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}