CVE-2025-23149: Linux kernel · tpm: do not start chip while suspended
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 4 Nov 2026, 18:30 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 1 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- nvd.nist.gov/vuln/detail/CVE-2025-23149 (opens in a new tab)
- git.kernel.org/stable/c/1404dff1e11bf927b70ac25e1de97bed9742ede4 (opens in a new tab)
- git.kernel.org/stable/c/17d253af4c2c8a2acf84bb55a0c2045f150b7dfd (opens in a new tab)
- git.kernel.org/stable/c/e74e2394eed90aff5c3a08c1f51f476d4de71d02 (opens in a new tab)
- git.kernel.org/stable/c/f1044e995b64d70ef90ef6f2b89955b127497702 (opens in a new tab)
- git.kernel.org/stable/c/f3cb81cb96d587f9f235a11789d1ec0992643078 (opens in a new tab)