cve/published/2022/CVE-2022-49134.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmlxsw: spectrum: Guard against invalid local ports\n\nWhen processing events generated by the device's firmware, the driver\nprotects itself from events reported for non-existent local ports, but\nnot for the CPU port (local port 0), which exists, but does not have all\nthe fields as any local port.\n\nThis can result in a NULL pointer dereference when trying access\n'struct mlxsw_sp_port' fields which are not initialized for CPU port.\n\nCommit 63b08b1f6834 (\"mlxsw: spectrum: Protect driver from buggy firmware\")\nalready handled such issue by bailing early when processing a PUDE event\nreported for the CPU port.\n\nGeneralize the approach by moving the check to a common function and\nmaking use of it in all relevant places."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum.c",
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum.h",
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c",
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c"
               ],
               "versions": [
                  {
                     "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                     "lessThan": "4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                     "lessThan": "bcdfd615f83b4bd04678109bf18022d1476e4bbf",
                     "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/mellanox/mlxsw/spectrum.c",
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum.h",
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c",
                  "drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c"
               ],
               "versions": [
                  {
                     "version": "5.17.3",
                     "lessThanOrEqual": "5.17.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.18",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionEndExcluding": "5.17.3"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionEndExcluding": "5.18"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/4cad27ba2e5a5843a7fab5aa30de2b8e8c3db3a8"
            },
            {
               "url": "https://git.kernel.org/stable/c/bcdfd615f83b4bd04678109bf18022d1476e4bbf"
            }
         ],
         "title": "mlxsw: spectrum: Guard against invalid local ports",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-49134",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}