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
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-gkeUpgrade linux-awsUpgrade linuxUpgrade linux-realtimeUpgrade linux-raspiUpgrade linux-intel-iotgUpgrade linux-hwe-5.15Upgrade linux-kvmUpgrade linux-lowlatencyUpgrade linux-intel-iotg-5.15Upgrade linux-azureUpgrade linux-lowlatency-hwe-5.15Upgrade linux-oracleUpgrade linux-gcpUpgrade linux-azure-5.15Upgrade linux-ibm | Mar 19, 2025 | Feb 26, 2025 |
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