{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-50041",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-10-21T12:17:06.071Z",
        "datePublished": "2024-10-21T19:39:40.435Z",
        "dateUpdated": "2024-10-22T13:28:44.245Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-10-21T19:39:40.435Z"
            },
            "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."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/intel/i40e/i40e_main.c",
                        "drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c"
                    ],
                    "versions": [
                        {
                            "version": "ddec6cbbe227",
                            "lessThan": "9db6ce9e2738",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fed0d9f13266",
                            "lessThan": "9a9747288ba0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fed0d9f13266",
                            "lessThan": "703c4d820b31",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fed0d9f13266",
                            "lessThan": "8831abff1bd5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fed0d9f13266",
                            "lessThan": "dac6c7b3d337",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/intel/i40e/i40e_main.c",
                        "drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c"
                    ],
                    "versions": [
                        {
                            "version": "5.19",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.19",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.168",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.1.113",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.6.57",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.11.4",
                            "lessThanOrEqual": "6.11.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.12-rc3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9a9747288ba0a9ad4f5c9877f18dd245770ad64e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/703c4d820b31bcadf465288d5746c53445f02a55"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8831abff1bd5b6bc8224f0c0671f46fbd702b5b2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb"
                }
            ],
            "title": "i40e: Fix macvlan leak by synchronizing access to mac_filter_hash",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2024-50041",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-10-22T13:24:46.896116Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-22T13:28:44.245Z"
                }
            }
        ]
    }
}