CVE-2026-23094 Details
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.
A vulnerability exists in the Linux kernel's Uacce (User Access Control for Computing Environments) subsystem, specifically related to the handling of device isolation features. When a driver implements the 'isolate_err_threshold_read' and 'isolate_err_threshold_write' callback functions, Uacce creates corresponding sysfs files. These files allow users to read and adjust the isolation policy. However, if a driver accesses a non-existent callback, it may lead to a system crash. The vulnerability arises because sysfs files are currently generated whenever either callback function is present, without verifying their validity. The issue has been addressed by modifying the sysfs creation process to ensure that only supported operations are executed, preventing potential crashes.
The vulnerability has been fixed in the Linux kernel. Users should upgrade to the latest version of the stable Linux kernel where this issue has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/82821a681d5dcce31475a65190fc39ea8f372cc0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/98eec349259b1fd876f350b1c600403bcef8f85d | kernel.org | Patch |
| https://git.kernel.org/stable/c/9ab05cdcac354b1b1139918f49c6418b9005d042 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fdbbb47d15ae17bf39fafec7e2028c1f8efba15e | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.3, < 6.6.122 >= 6.7, < 6.12.68 >= 6.13, < 6.18.8 6.19 rc1 6.19 rc2 6.19 rc3 6.19 rc4 6.19 rc5 6.19 rc6 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Mar 17, 2026 | Initial Analysis | [email protected] |
| Feb 4, 2026 | New CVE Received | kernel.org |