Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ptp: unregister virtual clocks when unregistering physical clock. When unregistering a physical clock which has some virtual clocks, unregister the virtual clocks with it. This fixes the following oops, which can be triggered by unloading a driver providing a PTP clock when it has enabled virtual clocks: BUG: unable to handle page fault for address: ffffffffc04fc4d8 Oops: 0000 [#1] PREEMPT SMP NOPTI RIP: 0010:ptp_vclock_read+0x31/0xb0 Call Trace: timecounter_read+0xf/0x50 ptp_vclock_refresh+0x2c/0x50 ? ptp_clock_release+0x40/0x40 ptp_aux_kworker+0x17/0x30 kthread_worker_fn+0x9b/0x240 ? kthread_should_park+0x30/0x30 kthread+0xe2/0x110 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x22/0x30
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 before b2dea2a696d09163da4cd33cb598ce1f73e86597; affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 before 9c796a57cbb5daf124a665689f0b2bc9262e0ced; affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 before c49eafe6249f844c26f9866886cc6719d81762df; affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 before bfcbb76b0f595ea9ede9f7a218086fef85242f10 |
| Linux / Linux | affected 5.14; unaffected 0 before 5.14; unaffected 5.15.33 through 5.15.*; unaffected 5.16.19 through 5.16.*; unaffected 5.17.2 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.