Medium 5.5Published Apr 3, 2026

CVE-2026-23446net: usb: aqc111: Do not perform PM inside suspend callback

Updated under an hour ago (Oct 26, 2026, 9:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before cc06ac99fd78839b2d38850785731ef131d9ae26; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before b87f361d41f9a7f1f6c426947ca815651c481376; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before 621f2f43741b51f62d767eb4752fbcefe2526926; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before 4de6a43e8ecf961feabddf0e9d6911081d2ed218; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before 3267bcb744ee8a2feabaa7ab69473f086f67fd71; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before d3e32a612c6391ca9b7c183aeec22b4fd24c300c; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before 98e8aed64614b0c199d5f0391fbe1a4331cb5773; from e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc before 069c8f5aebe4d5224cf62acc7d4b3486091c658a	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.0.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.20; from 6.19 before 6.19.10; 5.0; and 7 more ranges	NVD

References

References

https://git.kernel.org/stable/c/cc06ac99fd78839b2d38850785731ef131d9ae26	patch
https://git.kernel.org/stable/c/b87f361d41f9a7f1f6c426947ca815651c481376	patch
https://git.kernel.org/stable/c/621f2f43741b51f62d767eb4752fbcefe2526926	patch
https://git.kernel.org/stable/c/4de6a43e8ecf961feabddf0e9d6911081d2ed218	patch
https://git.kernel.org/stable/c/3267bcb744ee8a2feabaa7ab69473f086f67fd71	patch
https://git.kernel.org/stable/c/d3e32a612c6391ca9b7c183aeec22b4fd24c300c	patch
https://git.kernel.org/stable/c/98e8aed64614b0c199d5f0391fbe1a4331cb5773	patch
https://git.kernel.org/stable/c/069c8f5aebe4d5224cf62acc7d4b3486091c658a	patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.