{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix overflows checks in provide buffers\n\nColin reported before possible overflow and sign extension problems in\nio_provide_buffers_prep(). As Linus pointed out previous attempt did nothing\nuseful, see d81269fecb8ce (\"io_uring: fix provide_buffers sign extension\").\n\nDo that with help of check_<op>_overflow helpers. And fix struct\nio_provide_buf::len type, as it doesn't make much sense to keep it\nsigned."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/io_uring.c"
               ],
               "versions": [
                  {
                     "version": "efe68c1ca8f4",
                     "lessThan": "cbbc13b115b8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "efe68c1ca8f4",
                     "lessThan": "51bf90901952",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "efe68c1ca8f4",
                     "lessThan": "84b8c266c4bf",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "efe68c1ca8f4",
                     "lessThan": "38134ada0cee",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "fs/io_uring.c"
               ],
               "versions": [
                  {
                     "version": "5.8",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.8",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.37",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.21",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12.4",
                     "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/cbbc13b115b8f18e0a714d89f87fbdc499acfe2d"
            },
            {
               "url": "https://git.kernel.org/stable/c/51bf90901952aaac564bbdb36b2b503050c53dd9"
            },
            {
               "url": "https://git.kernel.org/stable/c/84b8c266c4bfe9ed5128e13253c388deb74b1b03"
            },
            {
               "url": "https://git.kernel.org/stable/c/38134ada0ceea3e848fe993263c0ff6207fd46e7"
            }
         ],
         "title": "io_uring: fix overflows checks in provide buffers",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47040",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}