CVE-2026-90357Hinoki check available

Kernel compromise via dangling TWT flow reuse

Published Sep 17, 2026 · Updated Sep 18, 2026

Memory corruption in the Linux kernel mt7915 Wi-Fi driver allows attackers on the adjacent WLAN to compromise the host. An MCU-rejected TWT agreement remains on dev->twt_list without its flow ID being marked, so reuse clears a linked slot and station removal leaves a dangling entry. An associated client on an AP with TWT responder enabled can trigger kernel reads and writes through the corrupted list, ending in host compromise, a hang, or a panic.

CVSS severity8.8
High
EPSS probability0.34%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Memory corruption in the Linux kernel mt7915 Wi-Fi driver allows attackers on the adjacent WLAN to compromise the host. An MCU-rejected TWT agreement remains on dev->twt_list without its flow ID being marked, so reuse clears a linked slot and station removal leaves a dangling entry. An associated client on an AP with TWT responder enabled can trigger kernel reads and writes through the corrupted list, ending in host compromise, a hang, or a panic.

The record

CVE
CVE-2026-90357
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
adjacent
Privileges
unauthenticated

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=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <16a04441eab0dcd4d7126a6f66b370adbf28f96d
  2. Affected versionversion=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <1bd5c4ed2b9045faf83315c54cd37a9b7c71b5c7
  3. Affected versionversion=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <6bce0f1280c94af8314f895f404629da09f0788c
  4. Affected versionversion=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <beaa42b875965dbc3e80e46970e0bfa60a94c2db
  5. Affected versionversion=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <c09d1b15ed2dc49060303b16a296b7b8b7794cbe
  6. Affected versionversion=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <cabe239e95b4eebf5b6c3654087b66ff9425bc7b
  7. Affected versionversion=5.16

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <16a04441eab0dcd4d7126a6f66b370adbf28f96d; version=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <1bd5c4ed2b9045faf83315c54cd37a9b7c71b5c7; version=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <6bce0f1280c94af8314f895f404629da09f0788c; version=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <beaa42b875965dbc3e80e46970e0bfa60a94c2db; version=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <c09d1b15ed2dc49060303b16a296b7b8b7794cbe; version=3782b69d03e714b8ff98b84c7426d8cef0e64d7c <cabe239e95b4eebf5b6c3654087b66ff9425bc7b; version=5.16

Published CVSS scores

8.8Linux CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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