CVE-2026-23446 (GCVE-0-2026-23446)
Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-04-18 08:58
VLAI?
Title
net: usb: aqc111: Do not perform PM inside suspend callback
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: usb: aqc111: Do not perform PM inside suspend callback
syzbot reports "task hung in rpm_resume"
This is caused by aqc111_suspend calling
the PM variant of its write_cmd routine.
The simplified call trace looks like this:
rpm_suspend()
usb_suspend_both() - here udev->dev.power.runtime_status == RPM_SUSPENDING
aqc111_suspend() - called for the usb device interface
aqc111_write32_cmd()
usb_autopm_get_interface()
pm_runtime_resume_and_get()
rpm_resume() - here we call rpm_resume() on our parent
rpm_resume() - Here we wait for a status change that will never happen.
At this point we block another task which holds
rtnl_lock and locks up the whole networking stack.
Fix this by replacing the write_cmd calls with their _nopm variants
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < cc06ac99fd78839b2d38850785731ef131d9ae26
(git)
Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < b87f361d41f9a7f1f6c426947ca815651c481376 (git) Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < 621f2f43741b51f62d767eb4752fbcefe2526926 (git) Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < 4de6a43e8ecf961feabddf0e9d6911081d2ed218 (git) Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < 3267bcb744ee8a2feabaa7ab69473f086f67fd71 (git) Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < d3e32a612c6391ca9b7c183aeec22b4fd24c300c (git) Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < 98e8aed64614b0c199d5f0391fbe1a4331cb5773 (git) Affected: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc , < 069c8f5aebe4d5224cf62acc7d4b3486091c658a (git) |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: aqc111: Do not perform PM inside suspend callback\n\nsyzbot reports \"task hung in rpm_resume\"\n\nThis is caused by aqc111_suspend calling\nthe PM variant of its write_cmd routine.\n\nThe simplified call trace looks like this:\n\nrpm_suspend()\n usb_suspend_both() - here udev-\u003edev.power.runtime_status == RPM_SUSPENDING\n aqc111_suspend() - called for the usb device interface\n aqc111_write32_cmd()\n usb_autopm_get_interface()\n pm_runtime_resume_and_get()\n rpm_resume() - here we call rpm_resume() on our parent\n rpm_resume() - Here we wait for a status change that will never happen.\n\nAt this point we block another task which holds\nrtnl_lock and locks up the whole networking stack.\n\nFix this by replacing the write_cmd calls with their _nopm variants"
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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