CVE-2026-23446 (GCVE-0-2026-23446)
Vulnerability from cvelistv5
Published
2026-04-03 15:15
Modified
2026-04-18 08:58
Severity ?
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
References
Impacted products
Vendor Product Version
Linux Linux Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
Version: e58ba4544c7771591d1e3157bc01b4a8e4d1c3fc
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/usb/aqc111.c"
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              "operator": "OR"
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      ],
      "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-\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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-18T08:58:58.160Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cc06ac99fd78839b2d38850785731ef131d9ae26"
        },
        {
          "url": "https://git.kernel.org/stable/c/b87f361d41f9a7f1f6c426947ca815651c481376"
        },
        {
          "url": "https://git.kernel.org/stable/c/621f2f43741b51f62d767eb4752fbcefe2526926"
        },
        {
          "url": "https://git.kernel.org/stable/c/4de6a43e8ecf961feabddf0e9d6911081d2ed218"
        },
        {
          "url": "https://git.kernel.org/stable/c/3267bcb744ee8a2feabaa7ab69473f086f67fd71"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3e32a612c6391ca9b7c183aeec22b4fd24c300c"
        },
        {
          "url": "https://git.kernel.org/stable/c/98e8aed64614b0c199d5f0391fbe1a4331cb5773"
        },
        {
          "url": "https://git.kernel.org/stable/c/069c8f5aebe4d5224cf62acc7d4b3486091c658a"
        }
      ],
      "title": "net: usb: aqc111: Do not perform PM inside suspend callback",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23446",
    "datePublished": "2026-04-03T15:15:29.863Z",
    "dateReserved": "2026-01-13T15:37:46.019Z",
    "dateUpdated": "2026-04-18T08:58:58.160Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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