Division by zero in Linux kernel - CVE-2026-63935
Published: July 20, 2026
Vulnerability identifier: #VU138723
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-63935
CWE-ID: CWE-369
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to division by zero in the nxp_sar_adc_write_raw function in the nxp-sar-adc driver when writing the sampling_frequency sysfs attribute. A local user can write a zero or negative value to the attribute to cause a denial of service.
The issue is triggered through the IIO sysfs interface.
How to mitigate CVE-2026-63935
Install security update from vendor's repository.