nvd-json-data-feeds/CVE-2024/CVE-2024-500xx/CVE-2024-50041.json

{
  "id": "CVE-2024-50041",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-10-21T20:15:17.133",
  "lastModified": "2024-10-24T19:31:39.373",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix macvlan leak by synchronizing access to mac_filter_hash\n\nThis patch addresses a macvlan leak issue in the i40e driver caused by\nconcurrent access to vsi->mac_filter_hash. The leak occurs when multiple\nthreads attempt to modify the mac_filter_hash simultaneously, leading to\ninconsistent state and potential memory leaks.\n\nTo fix this, we now wrap the calls to i40e_del_mac_filter() and zeroing\nvf->default_lan_addr.addr with spin_lock/unlock_bh(&vsi->mac_filter_hash_lock),\nensuring atomic operations and preventing concurrent access.\n\nAdditionally, we add lockdep_assert_held(&vsi->mac_filter_hash_lock) in\ni40e_add_mac_filter() to help catch similar issues in the future.\n\nReproduction steps:\n1. Spawn VFs and configure port vlan on them.\n2. Trigger concurrent macvlan operations (e.g., adding and deleting\n\tportvlan and/or mac filters).\n3. Observe the potential memory leak and inconsistent state in the\n\tmac_filter_hash.\n\nThis synchronization ensures the integrity of the mac_filter_hash and prevents\nthe described leak."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i40e: Corregir p\u00e9rdida de macvlan sincronizando el acceso a mac_filter_hash Este parche soluciona un problema de p\u00e9rdida de macvlan en el controlador i40e causado por el acceso simult\u00e1neo a vsi->mac_filter_hash. La p\u00e9rdida se produce cuando varios subprocesos intentan modificar mac_filter_hash simult\u00e1neamente, lo que genera un estado inconsistente y posibles p\u00e9rdidas de memoria. Para solucionar esto, ahora envolvemos las llamadas a i40e_del_mac_filter() y ponemos a cero vf->default_lan_addr.addr con spin_lock/unlock_bh(&vsi->mac_filter_hash_lock), lo que garantiza operaciones at\u00f3micas y evita el acceso simult\u00e1neo. Adem\u00e1s, agregamos lockdep_assert_held(&vsi->mac_filter_hash_lock) en i40e_add_mac_filter() para ayudar a detectar problemas similares en el futuro. Pasos de reproducci\u00f3n: 1. Genere VFs y configure el puerto VLAN en ellos. 2. Active operaciones MACVLAN simult\u00e1neas (por ejemplo, agregar y eliminar filtros MAC o PortVLAN). 3. Observe la posible p\u00e9rdida de memoria y el estado inconsistente en el hash de filtro MAC. Esta sincronizaci\u00f3n garantiza la integridad del hash de filtro MAC y evita la p\u00e9rdida descrita."
    }
  ],
  "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",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM"
        },
        "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": "5.15.54",
              "versionEndExcluding": "5.15.168",
              "matchCriteriaId": "D9429645-5F5B-486E-877E-5F2E0EB6202F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.18.11",
              "versionEndExcluding": "5.19",
              "matchCriteriaId": "3F904485-FC3F-4533-8CD9-B8208F0C4707"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.19",
              "versionEndExcluding": "6.1.113",
              "matchCriteriaId": "7D848431-3C7A-4C40-BC35-515047E89ABE"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.2",
              "versionEndExcluding": "6.6.57",
              "matchCriteriaId": "05D83DB8-7465-4F88-AFB2-980011992AC1"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.7",
              "versionEndExcluding": "6.11.4",
              "matchCriteriaId": "AA84D336-CE9A-4535-B901-1AD77EC17C34"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/703c4d820b31bcadf465288d5746c53445f02a55",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/8831abff1bd5b6bc8224f0c0671f46fbd702b5b2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9a9747288ba0a9ad4f5c9877f18dd245770ad64e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}