CVE-2026-23236 HIGH

CVE-2026-23236: fbdev: smscufx: properly copy ioctl memory to kernelspace

Vendor Linux
Product Linux
Published March 4, 2026
Last update June 2, 2026

CVSS base score

7.3/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

What the vulnerability does

01Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: properly copy ioctl memory to kernelspace The UFX_IOCTL_REPORT_DAMAGE ioctl does not properly copy data from userspace to kernelspace, and instead directly references the memory, which can cause problems if invalid data is passed from userspace. Fix this all up by correctly copying the memory before accessing it within the kernel.

Key dates

02Disclosure timeline

March 4, 2026 CVE published
June 2, 2026 Record updated