Description
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.
Product status
7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 (git) before 1b034f2429ce6b45ce74dc266175d277acafc5c4
7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 (git) before 90cc8b2add29b57288025b51c70bc647e7cccb12
7c01dbfc8a1c5f8b8e4a7907ab06db1449d478d0 (git) before efc54fb13d79117a825fef17364315a58682c7ec
6.15
Any version before 6.15
6.18.19 (semver)
6.19.9 (semver)
7.0 (original_commit_for_fix)
References
git.kernel.org/...c/1b034f2429ce6b45ce74dc266175d277acafc5c4
git.kernel.org/...c/90cc8b2add29b57288025b51c70bc647e7cccb12
git.kernel.org/...c/efc54fb13d79117a825fef17364315a58682c7ec