CVE-2026-64305crypto: qat - protect service table iterations with service_lock

Official 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.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/d36bff434e01d06d1e1fa98aa2b34ec32185c1ab
• https://git.kernel.org/stable/c/11d48f777cf8fad00db044f4c15cdf821427746b
• https://git.kernel.org/stable/c/222fa7b453b612f4407f260146d89a2ce2bc831d
• https://git.kernel.org/stable/c/c3c5925791cff3b84d313293fd60f384d877d793
• https://git.kernel.org/stable/c/0dbcecea740d943002c1cbdafa39bdfc108e32a5
• https://git.kernel.org/stable/c/5c6f845e77ec35f9b7b047cc8f9789bf397cdd3e