CVE-2026-23094: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: uacce: fix isolate sysfs check condition uacce supports the device isolation feature. If the driver implements the isolate_err_threshold_read and isolate_err_threshold_write callback functions, uacce will create sysfs files now. Users can read and configure the isolation policy through sysfs. Currently, sysfs files are created as long as either isolate_err_threshold_read or isolate_err_threshold_write callback functions are present. However, accessing a non-existent callback function may cause the system to crash. Therefore, intercept the creation of sysfs if neither read nor write exists; create sysfs if either is supported, but intercept unsupported operations at the call site.

Affected products

• Linux Linux Kernel: from 6.3, before 6.6.122 (fixed in 6.6.122); from 6.7, before 6.12.68 (fixed in 6.12.68); from 6.13, before 6.18.8 (fixed in 6.18.8); version 6.19 only

Published 2026-02-04. Last modified 2026-06-17.