CVE-2024-53085

TPM access interruption via suspend-read race

Published Nov 19, 2024 · Updated May 23, 2026

Race condition in the Linux kernel TPM subsystem allows local users to interrupt TPM access during system suspension. The tpm_pm_suspend() path sets TPM_CHIP_FLAG_SUSPENDED only after suspend work, allowing tpm_hwrng_read() to enter tpm_get_random() concurrently without holding the chip lock. Triggering requires local access, an enabled TPM random-number generator, and overlap between a random read and suspension; the observed result is TPM timeouts and unavailable random data.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel TPM subsystem allows local users to interrupt TPM access during system suspension. The tpm_pm_suspend() path sets TPM_CHIP_FLAG_SUSPENDED only after suspend work, allowing tpm_hwrng_read() to enter tpm_get_random() concurrently without holding the chip lock. Triggering requires local access, an enabled TPM random-number generator, and overlap between a random read and suspension; the observed result is TPM timeouts and unavailable random data.

The record

CVE
CVE-2024-53085
Published
Nov 19, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.31 <6.2
  2. Affected versionversion=6.3.5 <6.4
  3. Affected versionversion=6.4
  4. Affected versionversion=7cd46930b8bf37b84777410ac21bfdf1179021d5
  5. Affected versionversion=99d46450625590d410f86fe4660a5eff7d3b8343 <9265fed6db601ee2ec47577815387458ef4f047a
  6. Affected versionversion=99d46450625590d410f86fe4660a5eff7d3b8343 <bc203fe416abdd1c29da594565a7c3c4e979488e
  7. Affected versionversion=99d46450625590d410f86fe4660a5eff7d3b8343 <cfaf83501a0cbb104499c5b0892ee5ebde4e967f
  8. Affected versionversion=eeda114c92c7b2db69878cdf27163750fd57cfe2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1.31 <6.2; version=6.3.5 <6.4; version=6.4; version=7cd46930b8bf37b84777410ac21bfdf1179021d5; version=99d46450625590d410f86fe4660a5eff7d3b8343 <9265fed6db601ee2ec47577815387458ef4f047a; version=99d46450625590d410f86fe4660a5eff7d3b8343 <bc203fe416abdd1c29da594565a7c3c4e979488e; version=99d46450625590d410f86fe4660a5eff7d3b8343 <cfaf83501a0cbb104499c5b0892ee5ebde4e967f; version=eeda114c92c7b2db69878cdf27163750fd57cfe2

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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