{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: usbhid: fix info leak in hid_submit_ctrl\n\nIn hid_submit_ctrl(), the way of calculating the report length doesn't\ntake into account that report->size can be zero. When running the\nsyzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to\ncalculate transfer_buffer_length as 16384. When this urb is passed to\nthe usb core layer, KMSAN reports an info leak of 16384 bytes.\n\nTo fix this, first modify hid_report_len() to account for the zero\nreport size case by using DIV_ROUND_UP for the division. Then, call it\nfrom hid_submit_ctrl()."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/hid/usbhid/hid-core.c",
                  "include/linux/hid.h"
               ],
               "versions": [
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "c5d3c142f2d5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "41b1e71a2c57",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "8c064eece9a5",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "0e280502be1b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "7f5a4b24cdbd",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "b1e3596416d7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "21883bff0fd8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1da177e4c3f4",
                     "lessThan": "6be388f4a35d",
                     "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/hid/usbhid/hid-core.c",
                  "include/linux/hid.h"
               ],
               "versions": [
                  {
                     "version": "4.4.274",
                     "lessThanOrEqual": "4.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.274",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.238",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.196",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.127",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.45",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.12",
                     "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/c5d3c142f2d57d40c55e65d5622d319125a45366"
            },
            {
               "url": "https://git.kernel.org/stable/c/41b1e71a2c57366b08dcca1a28b0d45ca69429ce"
            },
            {
               "url": "https://git.kernel.org/stable/c/8c064eece9a51856f3f275104520c7e3017fc5c0"
            },
            {
               "url": "https://git.kernel.org/stable/c/0e280502be1b003c3483ae03fc60dea554fcfa82"
            },
            {
               "url": "https://git.kernel.org/stable/c/7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1"
            },
            {
               "url": "https://git.kernel.org/stable/c/b1e3596416d74ce95cc0b7b38472329a3818f8a9"
            },
            {
               "url": "https://git.kernel.org/stable/c/21883bff0fd854e07429a773ff18f1e9658f50e8"
            },
            {
               "url": "https://git.kernel.org/stable/c/6be388f4a35d2ce5ef7dbf635a8964a5da7f799f"
            }
         ],
         "title": "HID: usbhid: fix info leak in hid_submit_ctrl",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46906",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}