cve/published/2021/CVE-2021-46922.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: trusted: Fix TPM reservation for seal/unseal\n\nThe original patch 8c657a0590de (\"KEYS: trusted: Reserve TPM for seal\nand unseal operations\") was correct on the mailing list:\n\nhttps://lore.kernel.org/linux-integrity/20210128235621.127925-4-jarkko@kernel.org/\n\nBut somehow got rebased so that the tpm_try_get_ops() in\ntpm2_seal_trusted() got lost.  This causes an imbalanced put of the\nTPM ops and causes oopses on TIS based hardware.\n\nThis fix puts back the lost tpm_try_get_ops()"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "security/keys/trusted-keys/trusted_tpm2.c"
               ],
               "versions": [
                  {
                     "version": "67118bb78d72aab5b831f054a74ae856339a1974",
                     "lessThan": "bf84ef2dd2ccdcd8f2658476d34b51455f970ce4",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "498b8fc1cdc13b57b02dd28544b18323900fae10",
                     "lessThan": "39c8d760d44cb3fa0d67e8cd505df81cf4d80999",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "8c657a0590de585b1115847c17b34a58025f2f4b",
                     "lessThan": "9d5171eab462a63e2fbebfccf6026e92be018f20",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "security/keys/trusted-keys/trusted_tpm2.c"
               ],
               "versions": [
                  {
                     "version": "5.10.20",
                     "lessThan": "5.10.33",
                     "status": "affected",
                     "versionType": "semver"
                  },
                  {
                     "version": "5.11.3",
                     "lessThan": "5.11.17",
                     "status": "affected",
                     "versionType": "semver"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.10.20",
                           "versionEndExcluding": "5.10.33"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "5.11.3",
                           "versionEndExcluding": "5.11.17"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/bf84ef2dd2ccdcd8f2658476d34b51455f970ce4"
            },
            {
               "url": "https://git.kernel.org/stable/c/39c8d760d44cb3fa0d67e8cd505df81cf4d80999"
            },
            {
               "url": "https://git.kernel.org/stable/c/9d5171eab462a63e2fbebfccf6026e92be018f20"
            }
         ],
         "title": "KEYS: trusted: Fix TPM reservation for seal/unseal",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46922",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}