CVE-2026-23094

Summary

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 Software

Weaknesses

References

• https://git.kernel.org/stable/c/9ab05cdcac354b1b1139918f49c6418b9005d042
• https://git.kernel.org/stable/c/fdbbb47d15ae17bf39fafec7e2028c1f8efba15e
• https://git.kernel.org/stable/c/82821a681d5dcce31475a65190fc39ea8f372cc0
• https://git.kernel.org/stable/c/98eec349259b1fd876f350b1c600403bcef8f85d

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