CVE-2026-64305

Technical Description

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

crypto: qat - protect service table iterations with service_lock

The service_table list is protected by service_lock when entries are

added or removed (in adf_service_add() and adf_service_remove()), but

several functions iterate over the list without holding this lock.

A concurrent adf_service_register() or adf_service_unregister() call

could modify the list during traversal, leading to list corruption or

a use-after-free.

Fix this by holding service_lock across all list_for_each_entry()

iterations of service_table in adf_dev_init(), adf_dev_start(),

adf_dev_stop(), adf_dev_shutdown(), adf_dev_restarting_notify(),

adf_dev_restarted_notify(), and adf_error_notifier().

The lock ordering is safe: callers of the static helpers (adf_dev_up()

and adf_dev_down()) acquire state_lock before service_lock, and no

event_hld callback or service_lock holder ever acquires state_lock in

the reverse order.

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