CVE-2026-53339: i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()

CSIRTS triage

What

A NULL pointer dereference vulnerability exists in the i2c subsystem.

Who is affected

Deployments using the affected i2c subsystem are affected.

Urgency

Remediation is medium urgency due to a severity rating of 5.5.

Action

Apply relevant security updates or mitigations.

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

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-2026-53339

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-2026-533390.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
• unknownCVE-2026-53339: In the Linux kernel, the following vulnerability has been resolved: i2c: qcom-cci: Fix NULL po…nvd

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