{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "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"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-50041",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}