FKIE_CVE-2024-50041

Vulnerability from fkie_nvd - Published: 2024-10-21 20:15 - Updated: 2026-08-04 11:21
Severity
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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: i40e: Fix macvlan leak by synchronizing access to mac_filter_hash This patch addresses a macvlan leak issue in the i40e driver caused by concurrent access to vsi->mac_filter_hash. The leak occurs when multiple threads attempt to modify the mac_filter_hash simultaneously, leading to inconsistent state and potential memory leaks. To fix this, we now wrap the calls to i40e_del_mac_filter() and zeroing vf->default_lan_addr.addr with spin_lock/unlock_bh(&vsi->mac_filter_hash_lock), ensuring atomic operations and preventing concurrent access. Additionally, we add lockdep_assert_held(&vsi->mac_filter_hash_lock) in i40e_add_mac_filter() to help catch similar issues in the future. Reproduction steps: 1. Spawn VFs and configure port vlan on them. 2. Trigger concurrent macvlan operations (e.g., adding and deleting portvlan and/or mac filters). 3. Observe the potential memory leak and inconsistent state in the mac_filter_hash. This synchronization ensures the integrity of the mac_filter_hash and prevents the described leak.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/703c4d820b31bcadf465288d5746c53445f02a55Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8831abff1bd5b6bc8224f0c0671f46fbd702b5b2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a9747288ba0a9ad4f5c9877f18dd245770ad64ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fbPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.12
linux linux_kernel 6.12
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/i40e/i40e_main.c",
            "drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3",
              "status": "affected",
              "version": "ddec6cbbe22781d17965f1e6386e5a6363c058d2",
              "versionType": "git"
            },
            {
              "lessThan": "9a9747288ba0a9ad4f5c9877f18dd245770ad64e",
              "status": "affected",
              "version": "fed0d9f13266a22ce1fc9a97521ef9cdc6271a23",
              "versionType": "git"
            },
            {
              "lessThan": "703c4d820b31bcadf465288d5746c53445f02a55",
              "status": "affected",
              "version": "fed0d9f13266a22ce1fc9a97521ef9cdc6271a23",
              "versionType": "git"
            },
            {
              "lessThan": "8831abff1bd5b6bc8224f0c0671f46fbd702b5b2",
              "status": "affected",
              "version": "fed0d9f13266a22ce1fc9a97521ef9cdc6271a23",
              "versionType": "git"
            },
            {
              "lessThan": "dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb",
              "status": "affected",
              "version": "fed0d9f13266a22ce1fc9a97521ef9cdc6271a23",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8bfcbaa379694e05290fcff21f4bd40afcf88776",
              "versionType": "git"
            },
            {
              "lessThan": "5.15.168",
              "status": "affected",
              "version": "5.15.54",
              "versionType": "semver"
            },
            {
              "lessThan": "5.19",
              "status": "affected",
              "version": "5.18.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/i40e/i40e_main.c",
            "drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D9429645-5F5B-486E-877E-5F2E0EB6202F",
              "versionEndExcluding": "5.15.168",
              "versionStartIncluding": "5.15.54",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3F904485-FC3F-4533-8CD9-B8208F0C4707",
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "05D83DB8-7465-4F88-AFB2-980011992AC1",
              "versionEndExcluding": "6.6.57",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AA84D336-CE9A-4535-B901-1AD77EC17C34",
              "versionEndExcluding": "6.11.4",
              "versionStartIncluding": "6.7",
              "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",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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-\u003emac_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-\u003edefault_lan_addr.addr with spin_lock/unlock_bh(\u0026vsi-\u003emac_filter_hash_lock),\nensuring atomic operations and preventing concurrent access.\n\nAdditionally, we add lockdep_assert_held(\u0026vsi-\u003emac_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-\u0026gt;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-\u0026gt;default_lan_addr.addr con spin_lock/unlock_bh(\u0026amp;vsi-\u0026gt;mac_filter_hash_lock), lo que garantiza operaciones at\u00f3micas y evita el acceso simult\u00e1neo. Adem\u00e1s, agregamos lockdep_assert_held(\u0026amp;vsi-\u0026gt;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."
    }
  ],
  "id": "CVE-2024-50041",
  "lastModified": "2026-08-04T11:21:11.180",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-50041",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-22T13:24:46.896116Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-10-21T20:15:17.133",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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    },
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    },
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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