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VulnerabilityPublished Updated

CVE-2025-23149: Linux kernel · tpm: do not start chip while suspended

Source GCVE Database

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 4 Nov 2026, 18:30 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

AI-suggested

A fix is available in the Linux kernel that prevents tpm_chip_start() from being called when the TPM_CHIP_FLAG_SUSPENDED flag is set. Users should update to a Linux kernel version that includes this fix. No other mitigation actions are indicated.

Description

CVE-2025-23149 is a vulnerability in the Linux kernel TPM driver where the TPM chip may be started while it is suspended. This occurs because the TPM_CHIP_FLAG_SUSPENDED flag is checked after calling tpm_find_get_ops(), which can lead to an unintended call to tpm_chip_start(). This can cause warnings and errors related to I2C transfers during suspension, potentially impacting system stability or availability.

References

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