CVE-2024-53085 (GCVE-0-2024-53085)

Vulnerability from cvelistv5 – Published: 2024-11-19 17:45 – Updated: 2025-05-04 13:00
VLAI?
Title
tpm: Lock TPM chip in tpm_pm_suspend() first
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 99d46450625590d410f86fe4660a5eff7d3b8343 , < cfaf83501a0cbb104499c5b0892ee5ebde4e967f (git)
Affected: 99d46450625590d410f86fe4660a5eff7d3b8343 , < bc203fe416abdd1c29da594565a7c3c4e979488e (git)
Affected: 99d46450625590d410f86fe4660a5eff7d3b8343 , < 9265fed6db601ee2ec47577815387458ef4f047a (git)
Affected: 7cd46930b8bf37b84777410ac21bfdf1179021d5 (git)
Affected: eeda114c92c7b2db69878cdf27163750fd57cfe2 (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.64 , ≤ 6.6.* (semver)
Unaffected: 6.11.8 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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{
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm-chip.c",
            "drivers/char/tpm/tpm-interface.c"
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              "operator": "OR"
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      "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": "2025-05-04T13:00:17.431Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/cfaf83501a0cbb104499c5b0892ee5ebde4e967f"
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          "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",
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  "cveMetadata": {
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    "cveId": "CVE-2024-53085",
    "datePublished": "2024-11-19T17:45:14.209Z",
    "dateReserved": "2024-11-19T17:17:24.979Z",
    "dateUpdated": "2025-05-04T13:00:17.431Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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