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CVE-2026-64236

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: i2c: davinci: fix division by zero on missing clock-frequency When the 'clock-frequency' property is missing from the device tr…

Published Jul 24, 2026CWE-369EPSS 0.16%

Overview

CVE-2026-64236 is a medium-severity vulnerability. It was published on July 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

i2c: davinci: fix division by zero on missing clock-frequency

When the 'clock-frequency' property is missing from the device tree,

the driver falls back to DAVINCI_I2C_DEFAULT_BUS_FREQ. However, this

macro was defined in kHz (100), whereas the device tree property is

expected in Hz.

The probe function divided the fallback value by 1000, causing

integer truncation that resulted in dev->bus_freq = 0. This triggered

a deterministic division-by-zero kernel panic when calculating clock

dividers later in the probe sequence.

Fix this by redefining DAVINCI_I2C_DEFAULT_BUS_FREQ in Hz (100000)

to match the expected device tree property unit, allowing the existing

division logic to work correctly for both cases.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/030675aa54cf757769b3db65642433d626b3ed7cRefgit.kernel.org/stable/c/3f43865cb64dd7cb50efae1281a95585617b12a1Refgit.kernel.org/stable/c/9b694bc0e1831cbc5c3bbfd1b156ec719128f7d9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64236?

CVE-2026-64236 is a medium-severity vulnerability. It was published on July 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-64236?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-64236?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-64236?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64236 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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