{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hso: fix NULL-deref on disconnect regression\n\nCommit 8a12f8836145 (\"net: hso: fix null-ptr-deref during tty device\nunregistration\") fixed the racy minor allocation reported by syzbot, but\nintroduced an unconditional NULL-pointer dereference on every disconnect\ninstead.\n\nSpecifically, the serial device table must no longer be accessed after\nthe minor has been released by hso_serial_tty_unregister()."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/usb/hso.c"
               ],
               "versions": [
                  {
                     "version": "a462067d7c8e",
                     "lessThan": "5871761c5f0f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "145c89c441d2",
                     "lessThan": "0c71d4c89559",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "caf5ac93b3b5",
                     "lessThan": "24b699bea755",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "92028d7a31e5",
                     "lessThan": "5c17cfe155d2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "4a2933c88399",
                     "lessThan": "d7fad2ce15bd",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "dc195928d7e4",
                     "lessThan": "90642ee9eb58",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "388d05f70f1e",
                     "lessThan": "0f000005da31",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8a12f8836145",
                     "lessThan": "41c44e1f3112",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8a12f8836145",
                     "lessThan": "2ad5692db728",
                     "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/usb/hso.c"
               ],
               "versions": [
                  {
                     "version": "5.12",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.12",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.189",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.115",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.33",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.17",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.1",
                     "lessThanOrEqual": "5.12.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.13",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554"
            },
            {
               "url": "https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e"
            },
            {
               "url": "https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1"
            },
            {
               "url": "https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725"
            },
            {
               "url": "https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e"
            },
            {
               "url": "https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273"
            },
            {
               "url": "https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00"
            },
            {
               "url": "https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef"
            },
            {
               "url": "https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3"
            }
         ],
         "title": "net: hso: fix NULL-deref on disconnect regression",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46905",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}