CVE-2026-80825Hinoki check available

Kernel panic via unchecked transmit headroom

Published Sep 4, 2026 · Updated Sep 4, 2026

Kernel memory corruption in Linux allows remote attackers to panic affected systems by forwarding a frame through an mt7925u access point. The mt7925_usb_sdio_tx_prepare_skb function pushes a transmit descriptor and USB header without ensuring that a forwarded socket buffer has enough headroom. Exposure requires an mt7925u access point bridged to an ingress interface whose receive buffers leave insufficient headroom; the resulting underflow triggers a kernel panic.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Kernel memory corruption in Linux allows remote attackers to panic affected systems by forwarding a frame through an mt7925u access point. The mt7925_usb_sdio_tx_prepare_skb function pushes a transmit descriptor and USB header without ensuring that a forwarded socket buffer has enough headroom. Exposure requires an mt7925u access point bridged to an ingress interface whose receive buffers leave insufficient headroom; the resulting underflow triggers a kernel panic.

The record

CVE
CVE-2026-80825
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=6.7
  2. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <22edb6786127271aeba7abd30f152977c605c6a3
  3. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <8d481f93588932a95f657671d4e1601b90d130cc
  4. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <9a72b180f0575e41471e088e09bddc4b73d6dee2
  5. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <e5e8fc11a7ac578f16079f855b7fffc1649d053c
  6. Affected versionversion=c948b5da6bbec742b433138e3e3f9537a85af2e5 <ef3e34874d2332d0f63e72c2c35ce5c93568c125

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <22edb6786127271aeba7abd30f152977c605c6a3; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <8d481f93588932a95f657671d4e1601b90d130cc; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <9a72b180f0575e41471e088e09bddc4b73d6dee2; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <e5e8fc11a7ac578f16079f855b7fffc1649d053c; version=c948b5da6bbec742b433138e3e3f9537a85af2e5 <ef3e34874d2332d0f63e72c2c35ce5c93568c125

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.

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

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

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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Your stack

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