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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-49229

ptp: unregister virtual clocks when unregistering physical clock.

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Status
Published
Published
Updated
Assigning organization
Linux

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 73f37068d540eba5f93ba3a0019bf479d35ebd76 to < b2dea2a696d09163da4cd33cb598ce1f73e86597affected
  • 73f37068d540eba5f93ba3a0019bf479d35ebd76 to < 9c796a57cbb5daf124a665689f0b2bc9262e0cedaffected
  • 73f37068d540eba5f93ba3a0019bf479d35ebd76 to < c49eafe6249f844c26f9866886cc6719d81762dfaffected
  • 73f37068d540eba5f93ba3a0019bf479d35ebd76 to < bfcbb76b0f595ea9ede9f7a218086fef85242f10affected

Linux Linux

Default version status: affected

  • 5.14affected
  • 0 to < 5.14unaffected
  • 5.15.33 to ≤ 5.15.*unaffected
  • 5.16.19 to ≤ 5.16.*unaffected
  • 5.17.2 to ≤ 5.17.*unaffected
  • 5.18 to ≤ *unaffected

References