Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 before 1b034f2429ce6b45ce74dc266175d277acafc5c4; affected 7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 before 90cc8b2add29b57288025b51c70bc647e7cccb12; affected 7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 before efc54fb13d79117a825fef17364315a58682c7ec |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.18.19 through 6.18.*; unaffected 6.19.9 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.