CVE-2026-53103

System hang via MT7925 station-removal deadlock

Published Jun 24, 2026 · Updated Jun 24, 2026

Improper locking in the Linux Kernel MT7925 Wi-Fi driver allows local users to hang affected systems during station removal. mt7925_roc_abort_sync calls cancel_work_sync while the caller holds dev->mt76.mutex and roc_work needs that mutex to finish, leaving both paths blocked. Reachability requires local low-privileged access, an MT7925 device using the mt76 driver, and the station-removal path; the documented impact is an availability-only system hang.

CVSS severity5.5
Medium
EPSS probability0.09%
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 Kernel MT7925 Wi-Fi driver allows local users to hang affected systems during station removal. mt7925_roc_abort_sync calls cancel_work_sync while the caller holds dev->mt76.mutex and roc_work needs that mutex to finish, leaving both paths blocked. Reachability requires local low-privileged access, an MT7925 device using the mt76 driver, and the station-removal path; the documented impact is an availability-only system hang.

The record

CVE
CVE-2026-53103
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 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=45064d19fd3af6aeb0887b35b5564927980cf150 <153bcba36c87a1ba555b57b6c49028d5812f895b
  2. Affected versionversion=45064d19fd3af6aeb0887b35b5564927980cf150 <2d8e0053bca29143ace51e08c980ff076844a4b0
  3. Affected versionversion=45064d19fd3af6aeb0887b35b5564927980cf150 <dd08ca3f092f4185ece69ce2a835c23198b1628a
  4. Affected versionversion=6.11.2 <6.12
  5. Affected versionversion=6.12
  6. Affected versionversion=978d1756b3ae1b857826eb7ed8181f3c5180dce9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=45064d19fd3af6aeb0887b35b5564927980cf150 <153bcba36c87a1ba555b57b6c49028d5812f895b; version=45064d19fd3af6aeb0887b35b5564927980cf150 <2d8e0053bca29143ace51e08c980ff076844a4b0; version=45064d19fd3af6aeb0887b35b5564927980cf150 <dd08ca3f092f4185ece69ce2a835c23198b1628a; version=6.11.2 <6.12; version=6.12; version=978d1756b3ae1b857826eb7ed8181f3c5180dce9

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.6UbuntuCVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9SUSECVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.8SUSECVSS:3.1/AV:A/AC:H/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.

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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