CVE-2026-45941

TPM service interruption via unreleased locality

Published May 27, 2026 · Updated May 27, 2026

Resource leakage in the Linux Kernel TPM I2C Infineon driver allows local users to interrupt TPM service after a burst-count timeout. On that timeout path, tpm_tis_i2c_send returns the get_burstcount error without releasing the TPM locality acquired at entry. A local low-privilege user who can exercise the affected Infineon I2C TPM path can leave the locality held and block subsequent TPM operations.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource leakage in the Linux Kernel TPM I2C Infineon driver allows local users to interrupt TPM service after a burst-count timeout. On that timeout path, tpm_tis_i2c_send returns the get_burstcount error without releasing the TPM locality acquired at entry. A local low-privilege user who can exercise the affected Infineon I2C TPM path can leave the locality held and block subsequent TPM operations.

The record

CVE
CVE-2026-45941
Published
May 27, 2026
Updated
May 27, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.7
  2. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <1a22048c1117cdfac185ba450aba67ed6b65dc87
  3. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <1bb8f8826d0748b4b92a98fb6b6dfe52081739f5
  4. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <2f7a665e1323359d99c74301d1e180f5e2c40181
  5. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <8f124c5582d443ac9fb690db26d08cab5d6ba76e
  6. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <948966e546f29af04391d98b8e378e4a7670c1c1
  7. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <a61b8412e3eb8b71646dba867e8252d8560a1a27
  8. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713
  9. Affected versionversion=aad628c1d91a6db57e572e4c1f35e863d81061d7 <c24c9c4cab11858f22f309521ba7ea5b1e7385f2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.7; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <1a22048c1117cdfac185ba450aba67ed6b65dc87; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <1bb8f8826d0748b4b92a98fb6b6dfe52081739f5; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <2f7a665e1323359d99c74301d1e180f5e2c40181; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <8f124c5582d443ac9fb690db26d08cab5d6ba76e; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <948966e546f29af04391d98b8e378e4a7670c1c1; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <a61b8412e3eb8b71646dba867e8252d8560a1a27; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713; version=aad628c1d91a6db57e572e4c1f35e863d81061d7 <c24c9c4cab11858f22f309521ba7ea5b1e7385f2

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-401Missing Release of Memory after Effective Lifetime
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo