SB20260727353 - Integer overflow in Linux kernel i2c busses driver

Description

This security bulletin contains information about 1 vulnerability.

1) Integer overflow (CVE-ID: CVE-2026-64236)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to integer truncation in the i2c-davinci driver probe function when processing a device tree configuration with a missing clock-frequency property. A local attacker can provide a device tree configuration that triggers a division by zero to cause a denial of service.

The issue results in a deterministic kernel panic during probe while calculating clock dividers.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/030675aa54cf757769b3db65642433d626b3ed7c
• https://git.kernel.org/stable/c/3f43865cb64dd7cb50efae1281a95585617b12a1
• https://git.kernel.org/stable/c/9b694bc0e1831cbc5c3bbfd1b156ec719128f7d9