CVE-2026-90380

System crash via stale Wi-Fi station pointer

Published Sep 17, 2026 · Updated Sep 18, 2026

Use-after-free in the Linux kernel mt792x Wi-Fi driver allows local users to crash the system through a station-removal race. mt76_rx_poll_complete dereferences an rx_status WCID pointer after mt7925_sta_pre_rcu_remove removes the associated station without clearing each MLD link pointer. Reachability requires low-privileged local access and an affected MediaTek mt7925 wireless path; the documented invalid kernel access can interrupt the system.

CVSS severity5.8
Medium
EPSS probability0.31%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel mt792x Wi-Fi driver allows local users to crash the system through a station-removal race. mt76_rx_poll_complete dereferences an rx_status WCID pointer after mt7925_sta_pre_rcu_remove removes the associated station without clearing each MLD link pointer. Reachability requires low-privileged local access and an affected MediaTek mt7925 wireless path; the documented invalid kernel access can interrupt the system.

The record

CVE
CVE-2026-90380
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.7
  2. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <217f9e7bb02558759be9d9ecfe532e9708741c50
  3. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <aaf414bf81ab4b680580871784b0b929818188eb
  4. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <b250943f3f8351385a17972bda001664a5c51008

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <217f9e7bb02558759be9d9ecfe532e9708741c50; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <aaf414bf81ab4b680580871784b0b929818188eb; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <b250943f3f8351385a17972bda001664a5c51008

Published CVSS scores

5.8Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/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.

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

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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