CVE-2026-68195

Kernel crash via non-MMIO TXRX_NOTIFY dispatch

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL pointer dereference in the mt7615 Wi-Fi driver allows adjacent attackers to crash affected Linux kernels via TXRX_NOTIFY events. mt7615_rx_check() and mt7615_queue_rx_skb() send the MMIO-only event to mt7615_mac_tx_free() on USB and SDIO, where queue_ops->tx_cleanup is NULL and the RX worker calls it. Reachability requires an mt7663 USB or SDIO device to deliver the event; the bounded consequence is a kernel crash, with no disclosed data access or modification.

CVSS severity6.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the mt7615 Wi-Fi driver allows adjacent attackers to crash affected Linux kernels via TXRX_NOTIFY events. mt7615_rx_check() and mt7615_queue_rx_skb() send the MMIO-only event to mt7615_mac_tx_free() on USB and SDIO, where queue_ops->tx_cleanup is NULL and the RX worker calls it. Reachability requires an mt7663 USB or SDIO device to deliver the event; the bounded consequence is a kernel crash, with no disclosed data access or modification.

The record

CVE
CVE-2026-68195
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=5.8
  2. Affected versionversion=eb99cc95c3b6513b495c4839ac4917206705f657 <39afc46c0243d10b7795e6e6cf4ae91f41732120
  3. Affected versionversion=eb99cc95c3b6513b495c4839ac4917206705f657 <88c98ef247a3126fea9bbbda953a18a2f36c3ea7
  4. Affected versionversion=eb99cc95c3b6513b495c4839ac4917206705f657 <ab4d213393e846baa6437497f94dda7553cbeda7
  5. Affected versionversion=eb99cc95c3b6513b495c4839ac4917206705f657 <b2ab73b8123ce6cf2bc32634bfee4928676ffa66
  6. Affected versionversion=eb99cc95c3b6513b495c4839ac4917206705f657 <f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=eb99cc95c3b6513b495c4839ac4917206705f657 <39afc46c0243d10b7795e6e6cf4ae91f41732120; version=eb99cc95c3b6513b495c4839ac4917206705f657 <88c98ef247a3126fea9bbbda953a18a2f36c3ea7; version=eb99cc95c3b6513b495c4839ac4917206705f657 <ab4d213393e846baa6437497f94dda7553cbeda7; version=eb99cc95c3b6513b495c4839ac4917206705f657 <b2ab73b8123ce6cf2bc32634bfee4928676ffa66; version=eb99cc95c3b6513b495c4839ac4917206705f657 <f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5

Published CVSS scores

6.5Amazon LinuxCVSS:3.1/AV:A/AC:L/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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