CVE-2026-80803Hinoki check available

Kernel stack corruption via oversized NFC-F response

Published Sep 4, 2026 · Updated Sep 4, 2026

Stack-based buffer overflow in Linux kernel NFC digital support allows physically proximate attackers to corrupt kernel stack memory. digital_in_recv_sensf_res() copies resp->len bytes from an NFC-F SENSF_RES into the 18-byte target.sensf_res field without an upper-bound check. The attacker must be nearby and respond during active NFC discovery; no prior pairing, authentication, or user interaction is required.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stack-based buffer overflow in Linux kernel NFC digital support allows physically proximate attackers to corrupt kernel stack memory. digital_in_recv_sensf_res() copies resp->len bytes from an NFC-F SENSF_RES into the 18-byte target.sensf_res field without an upper-bound check. The attacker must be nearby and respond during active NFC discovery; no prior pairing, authentication, or user interaction is required.

The record

CVE
CVE-2026-80803
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

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=3.13
  2. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <31aa28ed732f66ab83c40ef53d99791be69b85c4
  3. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16
  4. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <4e942da2869bcd646353eef706b7dd82efeb9db5
  5. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <6afb29751ee731e7f7a96feb8a15f91441e552ba
  6. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6
  7. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <a56773e649ea99b344d6bbaf90f34c8e3fadef5d
  8. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <af4c0606f743e009254a8d252096855335ade85d
  9. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <d0756a98277e383c26fead988a96c91f0781cd7f
  10. Affected versionversion=8c0695e4998dd268ff2a05951961247b7e015651 <e886c63d2ca7108826076989103a1ffa8a0bb8f4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.13; version=8c0695e4998dd268ff2a05951961247b7e015651 <31aa28ed732f66ab83c40ef53d99791be69b85c4; version=8c0695e4998dd268ff2a05951961247b7e015651 <344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16; version=8c0695e4998dd268ff2a05951961247b7e015651 <4e942da2869bcd646353eef706b7dd82efeb9db5; version=8c0695e4998dd268ff2a05951961247b7e015651 <6afb29751ee731e7f7a96feb8a15f91441e552ba; version=8c0695e4998dd268ff2a05951961247b7e015651 <a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6; version=8c0695e4998dd268ff2a05951961247b7e015651 <a56773e649ea99b344d6bbaf90f34c8e3fadef5d; version=8c0695e4998dd268ff2a05951961247b7e015651 <af4c0606f743e009254a8d252096855335ade85d; version=8c0695e4998dd268ff2a05951961247b7e015651 <d0756a98277e383c26fead988a96c91f0781cd7f; version=8c0695e4998dd268ff2a05951961247b7e015651 <e886c63d2ca7108826076989103a1ffa8a0bb8f4

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)
Vectoradjacent
Privilegesunauthenticated
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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