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
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2022-54997 | 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 |
Tue, 21 Oct 2025 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
|
| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:* |
|
| Vendors & Products |
Linux
Linux linux Kernel |
Sat, 07 Jun 2025 03:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| CPEs | cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux |
Fri, 28 Feb 2025 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
Wed, 26 Feb 2025 02:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 | |
| Title | ptp: unregister virtual clocks when unregistering physical clock. | |
| References |
|
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-11T18:55:38.756Z
Reserved: 2025-02-26T01:49:39.293Z
Link: CVE-2022-49229
No data.
Status : Analyzed
Published: 2025-02-26T07:00:59.943
Modified: 2025-10-21T11:52:00.523
Link: CVE-2022-49229
OpenCVE Enrichment
No data.
EUVD