CVE-2022-48997

TPM transaction disruption via suspend-time race

Published Oct 21, 2024 · Updated May 11, 2026

Race condition in the Linux TPM subsystem allows local users to disrupt TPM transactions during system suspend. The tpm_pm_suspend() path starts TPM transactions without the mutex used by other accessors, allowing the unfrozen hw_random kthread to call tpm_get_random() concurrently. Reachability requires local low-privileged access, a TPM, concurrent hw_random activity, and a suspend event; the observed effect is invalid TPM status and failed receive operations.

CVSS severity4.7
Medium
EPSS probability0.24%
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 TPM subsystem allows local users to disrupt TPM transactions during system suspend. The tpm_pm_suspend() path starts TPM transactions without the mutex used by other accessors, allowing the unfrozen hw_random kthread to call tpm_get_random() concurrently. Reachability requires local low-privileged access, a TPM, concurrent hw_random activity, and a suspend event; the observed effect is invalid TPM status and failed receive operations.

The record

CVE
CVE-2022-48997
Published
Oct 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.1
  2. Affected versionversion=e891db1a18bf11e02533ec2386b796cfd8d60666 <23393c6461422df5bf8084a086ada9a7e17dc2ba
  3. Affected versionversion=e891db1a18bf11e02533ec2386b796cfd8d60666 <25b78bf98b07ff5aceb9b1e24f72ec0236c5c053
  4. Affected versionversion=e891db1a18bf11e02533ec2386b796cfd8d60666 <4e0d6c687c925e27fd4bc78a2721d10acf5614d6
  5. Affected versionversion=e891db1a18bf11e02533ec2386b796cfd8d60666 <571b6bbbf54d835ea6120f65575cb55cd767e603
  6. Affected versionversion=e891db1a18bf11e02533ec2386b796cfd8d60666 <d699373ac5f3545243d3c73a1ccab77fdef8cec6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.1; version=e891db1a18bf11e02533ec2386b796cfd8d60666 <23393c6461422df5bf8084a086ada9a7e17dc2ba; version=e891db1a18bf11e02533ec2386b796cfd8d60666 <25b78bf98b07ff5aceb9b1e24f72ec0236c5c053; version=e891db1a18bf11e02533ec2386b796cfd8d60666 <4e0d6c687c925e27fd4bc78a2721d10acf5614d6; version=e891db1a18bf11e02533ec2386b796cfd8d60666 <571b6bbbf54d835ea6120f65575cb55cd767e603; version=e891db1a18bf11e02533ec2386b796cfd8d60666 <d699373ac5f3545243d3c73a1ccab77fdef8cec6

Published CVSS scores

4.7NVDCVSS:3.1/AV:L/AC:H/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-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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