CVE-2026-64080

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

firmware: arm_ffa: Snapshot notifier callbacks under lock

Both notification handlers currently look up a notifier callback under

notify_lock, drop the lock, and then dereference the returned

notifier entry. A concurrent unregister can delete and free that

entry in the gap, leaving the handler to dereference stale memory.

Copy the callback pointer and callback data while notify_lock is

still held and invoke the callback only after the lock is dropped.

This keeps the existing callback execution model while removing the

use-after-free window in both the framework and non-framework

notification paths.