cve-2024-53085
Vulnerability from cvelistv5
Published
2024-11-19 17:45
Modified
2024-12-19 09:38
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tpm: Lock TPM chip in tpm_pm_suspend() first Setting TPM_CHIP_FLAG_SUSPENDED in the end of tpm_pm_suspend() can be racy according, as this leaves window for tpm_hwrng_read() to be called while the operation is in progress. The recent bug report gives also evidence of this behaviour. Aadress this by locking the TPM chip before checking any chip->flags both in tpm_pm_suspend() and tpm_hwrng_read(). Move TPM_CHIP_FLAG_SUSPENDED check inside tpm_get_random() so that it will be always checked only when the lock is reserved.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9265fed6db601ee2ec47577815387458ef4f047aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc203fe416abdd1c29da594565a7c3c4e979488ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cfaf83501a0cbb104499c5b0892ee5ebde4e967f
Impacted products
Vendor Product Version
Linux Linux Version: 99d46450625590d410f86fe4660a5eff7d3b8343
Version: 99d46450625590d410f86fe4660a5eff7d3b8343
Version: 99d46450625590d410f86fe4660a5eff7d3b8343
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   Linux Linux Version: 6.4
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm-chip.c",
            "drivers/char/tpm/tpm-interface.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cfaf83501a0cbb104499c5b0892ee5ebde4e967f",
              "status": "affected",
              "version": "99d46450625590d410f86fe4660a5eff7d3b8343",
              "versionType": "git"
            },
            {
              "lessThan": "bc203fe416abdd1c29da594565a7c3c4e979488e",
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              "versionType": "git"
            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm-chip.c",
            "drivers/char/tpm/tpm-interface.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: Lock TPM chip in tpm_pm_suspend() first\n\nSetting TPM_CHIP_FLAG_SUSPENDED in the end of tpm_pm_suspend() can be racy\naccording, as this leaves window for tpm_hwrng_read() to be called while\nthe operation is in progress. The recent bug report gives also evidence of\nthis behaviour.\n\nAadress this by locking the TPM chip before checking any chip-\u003eflags both\nin tpm_pm_suspend() and tpm_hwrng_read(). Move TPM_CHIP_FLAG_SUSPENDED\ncheck inside tpm_get_random() so that it will be always checked only when\nthe lock is reserved."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:38:49.816Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cfaf83501a0cbb104499c5b0892ee5ebde4e967f"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc203fe416abdd1c29da594565a7c3c4e979488e"
        },
        {
          "url": "https://git.kernel.org/stable/c/9265fed6db601ee2ec47577815387458ef4f047a"
        }
      ],
      "title": "tpm: Lock TPM chip in tpm_pm_suspend() first",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53085",
    "datePublished": "2024-11-19T17:45:14.209Z",
    "dateReserved": "2024-11-19T17:17:24.979Z",
    "dateUpdated": "2024-12-19T09:38:49.816Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53085\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-11-19T18:15:27.757\",\"lastModified\":\"2024-12-09T13:10:05.850\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntpm: Lock TPM chip in tpm_pm_suspend() first\\n\\nSetting TPM_CHIP_FLAG_SUSPENDED in the end of tpm_pm_suspend() can be racy\\naccording, as this leaves window for tpm_hwrng_read() to be called while\\nthe operation is in progress. The recent bug report gives also evidence of\\nthis behaviour.\\n\\nAadress this by locking the TPM chip before checking any chip-\u003eflags both\\nin tpm_pm_suspend() and tpm_hwrng_read(). Move TPM_CHIP_FLAG_SUSPENDED\\ncheck inside tpm_get_random() so that it will be always checked only when\\nthe lock is reserved.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tpm: Bloquear el chip TPM en tpm_pm_suspend() primero Establecer TPM_CHIP_FLAG_SUSPENDED al final de tpm_pm_suspend() puede ser arriesgado, ya que esto deja margen para que se llame a tpm_hwrng_read() mientras la operaci\u00f3n est\u00e1 en progreso. El reciente informe de errores tambi\u00e9n proporciona evidencia de este comportamiento. Solucione esto bloqueando el chip TPM antes de comprobar cualquier chip-\u0026gt;flags tanto en tpm_pm_suspend() como en tpm_hwrng_read(). Mueva la comprobaci\u00f3n TPM_CHIP_FLAG_SUSPENDED dentro de tpm_get_random() para que siempre se compruebe solo cuando el bloqueo est\u00e9 reservado.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.4\",\"versionEndExcluding\":\"6.11.8\",\"matchCriteriaId\":\"9622BDD0-B318-4383-8164-BB85D5D842B3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0F717D8-3014-4F84-8086-0124B2111379\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"24DBE6C7-2AAE-4818-AED2-E131F153D2FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"24B88717-53F5-42AA-9B72-14C707639E3F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/9265fed6db601ee2ec47577815387458ef4f047a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bc203fe416abdd1c29da594565a7c3c4e979488e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cfaf83501a0cbb104499c5b0892ee5ebde4e967f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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