---
id: CVE-2026-80803
title: 'nfc: digital: clamp SENSF_RES length to the destination buffer'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nfc: digital: clamp SENSF_RES length to the destination buffer

  digital_in_recv_sensf_res() memcpy()s resp->len bytes from a remote
  NFC-F device response into the NFC_S…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    6afb29751ee731e7f7a96feb8a15f91441e552ba
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    e886c63d2ca7108826076989103a1ffa8a0bb8f4
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    4e942da2869bcd646353eef706b7dd82efeb9db5
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    d0756a98277e383c26fead988a96c91f0781cd7f
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    af4c0606f743e009254a8d252096855335ade85d
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    a56773e649ea99b344d6bbaf90f34c8e3fadef5d
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    31aa28ed732f66ab83c40ef53d99791be69b85c4
  - >-
    Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 <
    344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16
  - Linux 3.13
published: '2026-09-04'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T08:43:56.485Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80803'
references:
  - url: 'https://git.kernel.org/stable/c/6afb29751ee731e7f7a96feb8a15f91441e552ba'
  - url: 'https://git.kernel.org/stable/c/e886c63d2ca7108826076989103a1ffa8a0bb8f4'
  - url: 'https://git.kernel.org/stable/c/4e942da2869bcd646353eef706b7dd82efeb9db5'
  - url: 'https://git.kernel.org/stable/c/d0756a98277e383c26fead988a96c91f0781cd7f'
  - url: 'https://git.kernel.org/stable/c/af4c0606f743e009254a8d252096855335ade85d'
  - url: 'https://git.kernel.org/stable/c/a56773e649ea99b344d6bbaf90f34c8e3fadef5d'
  - url: 'https://git.kernel.org/stable/c/a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6'
  - url: 'https://git.kernel.org/stable/c/31aa28ed732f66ab83c40ef53d99791be69b85c4'
  - url: 'https://git.kernel.org/stable/c/344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16'
tags:
  - cve.org
epss: 0.00243
epssPercentile: 0.14379
ingestedAt: '2026-10-19T09:16:01.526Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

nfc: digital: clamp SENSF_RES length to the destination buffer

digital_in_recv_sensf_res() memcpy()s resp->len bytes from a remote
NFC-F device response into the NFC_SENSF_RES_MAXSIZE-byte target.sensf_res
field without an upper-bound check. A nearby malicious NFC-F device can
send an oversized SENSF_RES response to overflow the stack-local struct
nfc_target.

Clamp resp->len to NFC_SENSF_RES_MAXSIZE before the copy.

Found by 0sec automated security-research tooling (https://0sec.ai).

## Affected

- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < 6afb29751ee731e7f7a96feb8a15f91441e552ba`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < e886c63d2ca7108826076989103a1ffa8a0bb8f4`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < 4e942da2869bcd646353eef706b7dd82efeb9db5`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < d0756a98277e383c26fead988a96c91f0781cd7f`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < af4c0606f743e009254a8d252096855335ade85d`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < a56773e649ea99b344d6bbaf90f34c8e3fadef5d`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < a1ef9bddfbb3ae42b036c5aa16cf386d78db70b6`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < 31aa28ed732f66ab83c40ef53d99791be69b85c4`
- `Linux >= 8c0695e4998dd268ff2a05951961247b7e015651 < 344a56d7c8e0f3cbaff0bcb1bcd95a1a1db24b16`
- `Linux 3.13`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.