CVE-2026-23446

MEDIUM

net: usb: aqc111: Do not perform PM inside suspend callback

Title source: cna
STIX 2.1

Description

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

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 3.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (22)
Linux/Linux < 5.0
Linux/Linux 5.0
Linux/Linux 5.10.253 - 5.10.*
Linux/Linux 5.15.203 - 5.15.*
Linux/Linux 6.1.167 - 6.1.*
Linux/Linux 6.12.78 - 6.12.*
Linux/Linux 6.18.20 - 6.18.*
Linux/Linux 6.19.10 - 6.19.*
Linux/Linux 6.6.130 - 6.6.*
Linux/Linux 7.0
... and 12 more
Published Apr 03, 2026
Tracked Since Apr 03, 2026