Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.14, < 6.18.35 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/030675aa54cf757769b3db65642433d626b3ed7cPatch
- https://git.kernel.org/stable/c/3f43865cb64dd7cb50efae1281a95585617b12a1Patch
- https://git.kernel.org/stable/c/9b694bc0e1831cbc5c3bbfd1b156ec719128f7d9Patch
FAQ
What is CVE-2026-64236?
CVE-2026-64236 is a vulnerability with a CVSS score of 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 tree,...
How severe is CVE-2026-64236?
CVE-2026-64236 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64236?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.