CVE-2025-38210

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

configfs-tsm-report: Fix NULL dereference of tsm_ops

Unlike sysfs, the lifetime of configfs objects is controlled by

userspace. There is no mechanism for the kernel to find and delete all

created config-items. Instead, the configfs-tsm-report mechanism has an

expectation that tsm_unregister() can happen at any time and cause

established config-item access to start failing.

That expectation is not fully satisfied. While tsm_report_read(),

tsm_report_{is,is_bin}_visible(), and tsm_report_make_item() safely fail

if tsm_ops have been unregistered, tsm_report_privlevel_store()

tsm_report_provider_show() fail to check for ops registration. Add the

missing checks for tsm_ops having been removed.

Now, in supporting the ability for tsm_unregister() to always succeed,

it leaves the problem of what to do with lingering config-items. The

expectation is that the admin that arranges for the ->remove() (unbind)

of the ${tsm_arch}

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References