CVE-2026-64205: i2c: i801: fix hardware state machine corruption in error path

mediumCVSS 5.5CVE-2026-64205

CSIRTS triage

product: i2cOther

What: There is a hardware state machine corruption issue in the i801 i2c driver during error handling.
Who is affected: Deployments using the i801 i2c driver are affected.
Urgency: Remediation is medium priority as the severity is moderate and exploitation is not currently observed.
Action: Update the i2c driver to the fixed version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64205

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-642050.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64205	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for i2c

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

lowCVE-2026-10683: In the Synopsys DesignWare I2C driver (drivers/i2c/i2c_dw.c) operating in target/slave mode, t…nvd · 2026-07-27
highCVE-2026-64279: In the Linux kernel, the following vulnerability has been resolved: i2c: core: fix adapter der…nvd · 2026-07-25
unknownCVE-2026-64278: In the Linux kernel, the following vulnerability has been resolved: i2c: imx-lpi2c: mark I2C a…nvd · 2026-07-25
unknownCVE-2026-64275: In the Linux kernel, the following vulnerability has been resolved: Input: elan_i2c - prevent …nvd · 2026-07-25
unknownCVE-2026-64237: In the Linux kernel, the following vulnerability has been resolved: Input: elan_i2c - validate…nvd · 2026-07-24
unknownCVE-2026-64236: In the Linux kernel, the following vulnerability has been resolved: i2c: davinci: fix division…nvd · 2026-07-24