CVE-2026-97901

/// Technical description

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

genetlink: pin family module during policy dump

The generic netlink controller's policy dump keeps pointers to the target

family's operation and policy tables in its callback state. A dump may be

split across multiple skbs and remain pending after the initial request.

Netlink pins the module which owns the dump callback, but in this case

that is the controller's owner rather than the target family's owner. The

target family can consequently be unregistered and its module unloaded

while a policy dump is pending. Advancing the dump then dereferences

policy memory from the unloaded module.

Take a reference to the target family's module when the dump starts.

Drop it from the error and done paths. This matches the lifetime for which

the dump context retains the family and policy pointers.

/// 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