{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL\n\nIf we fail to copy the just created file descriptor to userland, we\ntry to clean up by putting back 'fd' and freeing 'ib'. The code uses\nput_unused_fd() for the former which is wrong, as the file descriptor\nwas already published by fd_install() which gets called internally by\nanon_inode_getfd().\n\nThis makes the error handling code leaving a half cleaned up file\ndescriptor table around and a partially destructed 'file' object,\nallowing userland to play use-after-free tricks on us, by abusing\nthe still usable fd and making the code operate on a dangling\n'file->private_data' pointer.\n\nInstead of leaving the kernel in a partially corrupted state, don't\nattempt to explicitly clean up and leave this to the process exit\npath that'll release any still valid fds, including the one created\nby the previous call to anon_inode_getfd(). Simply return -EFAULT to\nindicate the error."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/iio/industrialio-buffer.c"
               ],
               "versions": [
                  {
                     "version": "f73f7f4da581",
                     "lessThan": "b7f54894aa75",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f73f7f4da581",
                     "lessThan": "202071d25185",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f73f7f4da581",
                     "lessThan": "c72ea2050361",
                     "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/iio/industrialio-buffer.c"
               ],
               "versions": [
                  {
                     "version": "5.13",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.13",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.24",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.16.10",
                     "lessThanOrEqual": "5.16.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.17",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/b7f54894aa7517d2b6c797a499b9f491e9db9083"
            },
            {
               "url": "https://git.kernel.org/stable/c/202071d2518537866d291aa7cf26af54e674f4d4"
            },
            {
               "url": "https://git.kernel.org/stable/c/c72ea20503610a4a7ba26c769357d31602769c01"
            }
         ],
         "title": "iio: buffer: Fix file related error handling in IIO_BUFFER_GET_FD_IOCTL",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-48801",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}