cve/published/2021/CVE-2021-47364.json

{
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         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
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         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Fix memory leak in compat_insnlist()\n\n`compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST`\nioctl (whenwhen `CONFIG_COMPAT` is enabled).  It allocates memory to\ntemporarily hold an array of `struct comedi_insn` converted from the\n32-bit version in user space.  This memory is only being freed if there\nis a fault while filling the array, otherwise it is leaked.\n\nAdd a call to `kfree()` to fix the leak."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/comedi/comedi_fops.c"
               ],
               "versions": [
                  {
                     "version": "b8d47d8813055ce38c0d2ad913d5462017e52692",
                     "lessThan": "8d6a21e4cd6a319b0662cbe4ad6199e276ac776a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b8d47d8813055ce38c0d2ad913d5462017e52692",
                     "lessThan": "f217b6c1e28ed0b353634ce4d92a155b80bd1671",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "b8d47d8813055ce38c0d2ad913d5462017e52692",
                     "lessThan": "bb509a6ffed2c8b0950f637ab5779aa818ed1596",
                     "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/comedi/comedi_fops.c"
               ],
               "versions": [
                  {
                     "version": "5.8",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.8",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.10.70",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.14.9",
                     "lessThanOrEqual": "5.14.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.15",
                     "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": "5.8",
                           "versionEndExcluding": "5.10.70"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.8",
                           "versionEndExcluding": "5.14.9"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.8",
                           "versionEndExcluding": "5.15"
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               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a"
            },
            {
               "url": "https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671"
            },
            {
               "url": "https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596"
            }
         ],
         "title": "comedi: Fix memory leak in compat_insnlist()",
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      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-47364",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
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