CVE-2026-93214Public exploitHinoki check available

Service hang via circular configfs lock dependency

Published Sep 24, 2026 · Updated Sep 24, 2026

Deadlock in affected Linux kernels allows local users to hang configfs operations while creating and removing USB gadget target groups. usbg_make_tpg() holds dep_lock while configfs_depend_item_unlocked() acquires locks that configfs_rmdir() takes in the reverse order. Triggering it requires local access to configured USB gadget target and configfs interfaces; the bounded impact is a configuration-operation hang.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Deadlock in affected Linux kernels allows local users to hang configfs operations while creating and removing USB gadget target groups. usbg_make_tpg() holds dep_lock while configfs_depend_item_unlocked() acquires locks that configfs_rmdir() takes in the reverse order. Triggering it requires local access to configured USB gadget target and configfs interfaces; the bounded impact is a configuration-operation hang.

The record

CVE
CVE-2026-93214
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=4.5
  2. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <3639438a4c83ffc2e564c8c010b92137c5d11cfa
  3. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9
  4. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <78a14ea2284825055ab6c2a1f3489510f560f3a2
  5. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <9dbf74f4022f80f7669d2b3c22c5deb46c1b5674
  6. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277
  7. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <d90b0f90e30cd59b36005a4016b15cf02bcd7fb2
  8. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <eef3e62f90d86c1c5651742f84ecc9db1814a893
  9. Affected versionversion=4bb8548df632187d5db50878e71804af5f7c51ad <f81a2da137b029a282b9bc64d2f267d242948659

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=4.5; version=4bb8548df632187d5db50878e71804af5f7c51ad <3639438a4c83ffc2e564c8c010b92137c5d11cfa; version=4bb8548df632187d5db50878e71804af5f7c51ad <6bcd9ee6ad6989d1d85a7459687e45b7ad7568d9; version=4bb8548df632187d5db50878e71804af5f7c51ad <78a14ea2284825055ab6c2a1f3489510f560f3a2; version=4bb8548df632187d5db50878e71804af5f7c51ad <9dbf74f4022f80f7669d2b3c22c5deb46c1b5674; version=4bb8548df632187d5db50878e71804af5f7c51ad <abad5daa41cf5d0a0a9cba0397d3a0e7f11e0277; version=4bb8548df632187d5db50878e71804af5f7c51ad <d90b0f90e30cd59b36005a4016b15cf02bcd7fb2; version=4bb8548df632187d5db50878e71804af5f7c51ad <eef3e62f90d86c1c5651742f84ecc9db1814a893; version=4bb8548df632187d5db50878e71804af5f7c51ad <f81a2da137b029a282b9bc64d2f267d242948659

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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