CVE-2024-53085

Medium

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.

Package Linux Kernel
Published 2024-11-19
Last modified 2024-12-09
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-667

CVE-2024-53085 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.1.31, 6.3.5, 6.4 and later are affected. Fixed in 6.6.64, 6.11.8, 6.12 and their respective stable series.

Affected from
≥ 6.1.31 ≥ 6.3.5 ≥ 6.4
Fixed in
✓ 6.6.64 6.6.x ✓ 6.11.8 6.11.x ✓ 6.12

References

The following references provide additional information about CVE-2024-53085 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2024-53085?

    CVE-2024-53085 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 6.1.31 onward and has been patched in 6.6.64, 6.11.8 and 6.12. CVE-2024-53085 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-53085?

    CVE-2024-53085 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2024-53085?

    Yes — CVE-2024-53085 has been patched. Fixed versions include 6.6.64, 6.11.8 and 6.12. If you are running Linux kernel 6.1.31 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-53085 actively exploited?

    No — CVE-2024-53085 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Improper Locking (CWE-667)?

    The product does not properly acquire or release a lock, which can lead to unexpected behaviour. View CWE-667 on MITRE CWE →

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