CVE-2026-80694

Kernel crash via wrong netpoll callback argument

Published Aug 28, 2026 · Updated Aug 28, 2026

Denial of service in the MediaTek Ethernet driver in Linux allows attackers to crash the kernel through the netpoll polling path. mtk_poll_controller passes a net_device pointer to mtk_handle_irq_rx, which expects the struct mtk_eth request_irq cookie. The crash requires CONFIG_NET_POLL_CONTROLLER and an ndo_poll_controller call; no unprivileged or remote trigger is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the MediaTek Ethernet driver in Linux allows attackers to crash the kernel through the netpoll polling path. mtk_poll_controller passes a net_device pointer to mtk_handle_irq_rx, which expects the struct mtk_eth request_irq cookie. The crash requires CONFIG_NET_POLL_CONTROLLER and an ndo_poll_controller call; no unprivileged or remote trigger is documented.

The record

CVE
CVE-2026-80694
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=4.8
  2. Affected versionversion=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <276f1f180f55d56cf5992a581e20ed2b3dfa6ced
  3. Affected versionversion=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8
  4. Affected versionversion=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <7eb46318d53940dab63dea7130e720b67a656104
  5. Affected versionversion=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <e095f249e2209674f6366f6db0383a2b96e19239

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.8; version=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <276f1f180f55d56cf5992a581e20ed2b3dfa6ced; version=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <3bd58ac9ca0c552651f533c1bd280dd19ae7d4e8; version=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <7eb46318d53940dab63dea7130e720b67a656104; version=8186f6e382d8719d0a4bc0ef218c4dd7cf55b496 <e095f249e2209674f6366f6db0383a2b96e19239

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.

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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)
VectorUnavailable
PrivilegesUnavailable
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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