vulnerability
Ubuntu: (CVE-2022-49229): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Feb 26, 2025 | Mar 19, 2025 | Oct 23, 2025 |
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
Solutions
References
- CVE-2022-49229
- https://attackerkb.com/topics/CVE-2022-49229
- URL-https://git.kernel.org/linus/bfcbb76b0f595ea9ede9f7a218086fef85242f10
- URL-https://git.kernel.org/stable/c/9c796a57cbb5daf124a665689f0b2bc9262e0ced
- URL-https://git.kernel.org/stable/c/b2dea2a696d09163da4cd33cb598ce1f73e86597
- URL-https://git.kernel.org/stable/c/bfcbb76b0f595ea9ede9f7a218086fef85242f10
- URL-https://git.kernel.org/stable/c/c49eafe6249f844c26f9866886cc6719d81762df
- URL-https://www.cve.org/CVERecord?id=CVE-2022-49229
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