cve/published/2021/CVE-2021-47195.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\nspi: fix use-after-free of the add_lock mutex\n\nCommit 6098475d4cb4 (\"spi: Fix deadlock when adding SPI controllers on\nSPI buses\") introduced a per-controller mutex. But mutex_unlock() of\nsaid lock is called after the controller is already freed:\n\n  spi_unregister_controller(ctlr)\n  -> put_device(&ctlr->dev)\n    -> spi_controller_release(dev)\n  -> mutex_unlock(&ctrl->add_lock)\n\nMove the put_device() after the mutex_unlock()."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/spi/spi.c"
               ],
               "versions": [
                  {
                     "version": "aa3f3d7bef59583f2d3234173105a27ff61ef8fe",
                     "lessThan": "54c2c96eafcfd242e52e932ab54ace4784efe1dd",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "c8dce228db6f81dbc897a018dfc5c418e917cf64",
                     "lessThan": "11eab327a2a8bd36c38afbff920ae1bd45588dd4",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6098475d4cb48d821bdf453c61118c56e26294f0",
                     "lessThan": "37330f37f6666c7739a44b2b6b95b047ccdbed2d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "6098475d4cb48d821bdf453c61118c56e26294f0",
                     "lessThan": "6c53b45c71b4920b5e62f0ea8079a1da382b9434",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "722ef19a161ce3fffb3d1b01ce2301c306639bdd",
                     "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/spi/spi.c"
               ],
               "versions": [
                  {
                     "version": "5.15",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.15",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.15.5",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.16",
                     "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:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.15",
                           "versionEndExcluding": "5.15.5"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.15",
                           "versionEndExcluding": "5.16"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.14.15"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/54c2c96eafcfd242e52e932ab54ace4784efe1dd"
            },
            {
               "url": "https://git.kernel.org/stable/c/11eab327a2a8bd36c38afbff920ae1bd45588dd4"
            },
            {
               "url": "https://git.kernel.org/stable/c/37330f37f6666c7739a44b2b6b95b047ccdbed2d"
            },
            {
               "url": "https://git.kernel.org/stable/c/6c53b45c71b4920b5e62f0ea8079a1da382b9434"
            }
         ],
         "title": "spi: fix use-after-free of the add_lock mutex",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47195",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}