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CVE-2026-10647 Deadlock denial of service in USB CDC-NCM device class on TX enqueue failure

🗓️ 29 Jun 2026 21:39:08Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 11 Views

The USB CDC-NCM device class (subsys/usb/device_next/class/usbd_cdc_ncm.c) ignores the return value of usbd_ep_enqueue() in its ethernet transmit callback cdc_ncm_send(). When the enqueue fails, the function still calls k_sem_take(&data-sync_sem, ...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-10647
29 Jun 202621:39
attackerkb
Circl
CVE-2026-10647
29 Jun 202623:44
circl
CVE
CVE-2026-10647
29 Jun 202621:39
cve
EUVD
EUVD-2026-40235
29 Jun 202621:39
euvd
NVD
CVE-2026-10647
29 Jun 202622:16
nvd
Positive Technologies
PT-2026-53748
29 Jun 202600:00
ptsecurity
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "4.1.0",
        "status": "affected",
        "lessThan": "4.5.0",
        "versionType": "semver"
      }
    ]
  }
]

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29 Jun 2026 21:39Current
CVSS 3.15.3
11