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Unrated severityNVD Advisory· Published Feb 4, 2026· Updated Feb 9, 2026

uacce: fix isolate sysfs check condition

CVE-2026-23094

Description

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.

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