جزئیات آسیب‌پذیری

In the Linux kernel, the following vulnerability has been resolved: iavf: fix PTP use-after-free during reset Commit 7c01dbfc8a1c5f ("iavf: periodically cache PHC time") introduced a worker to cache PHC time, but failed to stop it during reset or disable. This creates a race condition where `iavf_reset_task()` or `iavf_disable_vf()` free adapter resources (AQ) while the worker is still running. If the worker triggers `iavf_queue_ptp_cmd()` during teardown, it accesses freed memory/locks, leading to a crash. Fix this by calling `iavf_ptp_release()` before tearing down the adapter. This ensures `ptp_clock_unregister()` synchronously cancels the worker and cleans up the chardev before the backing resources are destroyed.

• https://git.kernel.org/stable/c/1b034f2429ce6b45ce74dc266175d277acafc5c4
• https://git.kernel.org/stable/c/90cc8b2add29b57288025b51c70bc647e7cccb12
• https://git.kernel.org/stable/c/efc54fb13d79117a825fef17364315a58682c7ec