VulnerabilityPublished 27 May 2026Updated 6 Nov 2026

CVE-2026-45941: Linux kernel · tpm: tpm_i2c_infineon: Fix locality leak on get_burstcount() failure

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in c24c9c4cab11858f22f309521ba7ea5b1e7385f2 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:20 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in c24c9c4cab11858f22f309521ba7ea5b1e7385f2, bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713, a61b8412e3eb8b71646dba867e8252d8560a1a27 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 27 May 2026
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 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ aad628c1d91a6db57e572e4c1f35e863d81061d7, < c24c9c4cab11858f22f309521ba7ea5b1e7385f2	Fixed in c24c9c4cab11858f22f309521ba7ea5b1e7385f2
LinuxLinux	Affected ≥ aad628c1d91a6db57e572e4c1f35e863d81061d7, < bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713	Fixed in bbd6e97c836cbeb9606d7b7e5dcf8a1d89525713
LinuxLinux	Affected ≥ aad628c1d91a6db57e572e4c1f35e863d81061d7, < a61b8412e3eb8b71646dba867e8252d8560a1a27	Fixed in a61b8412e3eb8b71646dba867e8252d8560a1a27
LinuxLinux	Affected ≥ aad628c1d91a6db57e572e4c1f35e863d81061d7, < 948966e546f29af04391d98b8e378e4a7670c1c1	Fixed in 948966e546f29af04391d98b8e378e4a7670c1c1
LinuxLinux	Affected ≥ aad628c1d91a6db57e572e4c1f35e863d81061d7, < 8f124c5582d443ac9fb690db26d08cab5d6ba76e	Fixed in 8f124c5582d443ac9fb690db26d08cab5d6ba76e
LinuxLinux	Affected ≥ aad628c1d91a6db57e572e4c1f35e863d81061d7, < 2f7a665e1323359d99c74301d1e180f5e2c40181	Fixed in 2f7a665e1323359d99c74301d1e180f5e2c40181

AI-suggested

A fix is available and has been applied in the Linux kernel source code as indicated by the fixed commit hashes. Users should update to a Linux kernel version that includes these fixes. Since this is not a cloud service, manual patching is required.

Description

A vulnerability in the Linux kernel's TPM driver for Infineon TPM chips (tpm_i2c_infineon) was fixed to address a locality leak occurring on get_burstcount() failure. The function get_burstcount() can return -EBUSY on timeout, causing the function to return without releasing the acquired locality, potentially leading to resource leakage.

Impact

The vulnerability causes a locality leak in the TPM driver, which could lead to resource exhaustion or denial of service conditions related to TPM locality management. There is no indication of code execution or privilege escalation from the provided data. No known exploits in the wild have been reported.

Summary

The Linux kernel's tpm_i2c_infineon driver had a flaw where the get_burstcount() function could return -EBUSY on timeout, and in such cases, the locality acquired at the start of tpm_tis_i2c_send() was not released properly. This was fixed by adding a goto out_err path to ensure proper cleanup on failure. The issue affects version 3.7 of the Linux kernel and has been fixed in several commits identified by their hashes.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 6 Nov 2026, 16:20 UTC

Technical details

References

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