---
id: CVE-2026-98583
title: 'nfc: nfcmrvl: validate helper command length before pull'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nfc: nfcmrvl: validate helper command length before pull

  The firmware download receive path removes the NCI data header and
  reads the helper command before validating …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    842c0603cfa49530ef081f181a2ddbba77a37231
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    e4b012240c8aaf57cec192234c24e0db5f531ffa
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    f15ad9d6e9173a037587dded77c904fdae8df380
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    4d4601e182c8567329be7d919669ec4d847ddd93
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    ed2e00bb22c73156bf8030b6204deabb25cf4eb5
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c
  - >-
    Linux >= 3194c6870158e305dac2af52f83681e9cb67280f <
    686f942332b1667f13f3b8d6a2f50bcfbf42e277
  - Linux 4.4
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:18:56.360Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98583'
references:
  - url: 'https://git.kernel.org/stable/c/842c0603cfa49530ef081f181a2ddbba77a37231'
  - url: 'https://git.kernel.org/stable/c/e4b012240c8aaf57cec192234c24e0db5f531ffa'
  - url: 'https://git.kernel.org/stable/c/f15ad9d6e9173a037587dded77c904fdae8df380'
  - url: 'https://git.kernel.org/stable/c/a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9'
  - url: 'https://git.kernel.org/stable/c/4d4601e182c8567329be7d919669ec4d847ddd93'
  - url: 'https://git.kernel.org/stable/c/ed2e00bb22c73156bf8030b6204deabb25cf4eb5'
  - url: 'https://git.kernel.org/stable/c/6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c'
  - url: 'https://git.kernel.org/stable/c/686f942332b1667f13f3b8d6a2f50bcfbf42e277'
tags:
  - cve.org
ingestedAt: '2026-10-18T15:45:12.252Z'
---

## Overview

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

nfc: nfcmrvl: validate helper command length before pull

The firmware download receive path removes the NCI data header and
reads the helper command before validating the remaining packet length.
A short frame can therefore reach the data access before the malformed
packet is rejected.

Validate the complete helper command length before stripping the NCI
data header.

## Affected

- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < 842c0603cfa49530ef081f181a2ddbba77a37231`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < e4b012240c8aaf57cec192234c24e0db5f531ffa`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < f15ad9d6e9173a037587dded77c904fdae8df380`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < a4e56f57dd04d8f9bc6bc55f90f3d129da759ec9`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < 4d4601e182c8567329be7d919669ec4d847ddd93`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < ed2e00bb22c73156bf8030b6204deabb25cf4eb5`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < 6a17a5806e9fcd99cf0dd30c3e6301f2aa1fac3c`
- `Linux >= 3194c6870158e305dac2af52f83681e9cb67280f < 686f942332b1667f13f3b8d6a2f50bcfbf42e277`
- `Linux 4.4`

## Remediation

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