CVE-2022-49229
Published: Feb 26, 2025
Modified: May 11, 2026
Description
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
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 - < b2dea2a696d09163da4cd33cb598ce1f73e86597affected 73f37068d540eba5f93ba3a0019bf479d35ebd76 - < 9c796a57cbb5daf124a665689f0b2bc9262e0cedaffected 73f37068d540eba5f93ba3a0019bf479d35ebd76 - < c49eafe6249f844c26f9866886cc6719d81762dfaffected 73f37068d540eba5f93ba3a0019bf479d35ebd76 - < bfcbb76b0f595ea9ede9f7a218086fef85242f10 |
Linux | Linux | affected 5.14unaffected 0 - < 5.14unaffected 5.15.33 - <= 5.15.*unaffected 5.16.19 - <= 5.16.*unaffected 5.17.2 - <= 5.17.*+1 more versions |
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