CVE-2024-42085

System hang via recursive DWC3 lock acquisition

Published Jul 29, 2024 · Updated May 23, 2026

Improper locking in the Linux DWC3 USB core from 6.1 allows local users to hang the system by initiating system suspend. In dual-role mode, dwc3_suspend_common holds dwc->lock while dwc3_gadget_soft_disconnect attempts to acquire the same spinlock again. Reachability requires CONFIG_USB_DWC3_DUAL_ROLE and local access capable of initiating system suspend; the resulting impact is an availability-only hang.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Linux DWC3 USB core from 6.1 allows local users to hang the system by initiating system suspend. In dual-role mode, dwc3_suspend_common holds dwc->lock while dwc3_gadget_soft_disconnect attempts to acquire the same spinlock again. Reachability requires CONFIG_USB_DWC3_DUAL_ROLE and local access capable of initiating system suspend; the resulting impact is an availability-only hang.

The record

CVE
CVE-2024-42085
Published
Jul 29, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2fa487a9466760a4fb6f147aed6219379dabfc2e <7026576e89094aa9a0062aa6d10cba18aa99944c
  2. Affected versionversion=5.15.128 <5.15.162
  3. Affected versionversion=5265397f94424eaea596026fd34dc7acf474dcec <17e2956633ca560b95f1cbbb297cfc2adf650649
  4. Affected versionversion=5265397f94424eaea596026fd34dc7acf474dcec <7838de15bb700c2898a7d741db9b1f3cbc86c136
  5. Affected versionversion=5265397f94424eaea596026fd34dc7acf474dcec <d77e2b5104c51d3668b9717c825a4a06998efe63
  6. Affected versionversion=5265397f94424eaea596026fd34dc7acf474dcec <f1274cfab183e69a7c7bafffcb4f50703c876276
  7. Affected versionversion=6.1
  8. Affected versionversion=f2bfd0a2a640ca2f308b6893a89cfb2ec31e8fde <8731a0b180f6b5d52397c7aeea6eda9511a467a7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2fa487a9466760a4fb6f147aed6219379dabfc2e <7026576e89094aa9a0062aa6d10cba18aa99944c; version=5.15.128 <5.15.162; version=5265397f94424eaea596026fd34dc7acf474dcec <17e2956633ca560b95f1cbbb297cfc2adf650649; version=5265397f94424eaea596026fd34dc7acf474dcec <7838de15bb700c2898a7d741db9b1f3cbc86c136; version=5265397f94424eaea596026fd34dc7acf474dcec <d77e2b5104c51d3668b9717c825a4a06998efe63; version=5265397f94424eaea596026fd34dc7acf474dcec <f1274cfab183e69a7c7bafffcb4f50703c876276; version=6.1; version=f2bfd0a2a640ca2f308b6893a89cfb2ec31e8fde <8731a0b180f6b5d52397c7aeea6eda9511a467a7

Published CVSS scores

5.5NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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