---
id: CVE-2026-80754
title: 'Input: synaptics-rmi4 - fix F55 transmitter electrode count typo'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  Input: synaptics-rmi4 - fix F55 transmitter electrode count typo

  During F55 sensor detection, the transmitter (TX) electrode count was
  incorrectly assigned the value o…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    6484e00d6778fdf2209cd75940bc3902b276457f
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    db4e20265ebda729610ca5cf45ca9437462c3f36
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    a6d9646e77da7cab2dff7043a8e9f75e23b836bc
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    0739c65e799d4a93fe573ed23255a71fcfcc5438
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    9759502f5cd71805923457f183ae5b9533e20c7b
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    9b184c8337c6e12df129399007735a7fbcbbcb7b
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    a81cafe3c3c2f8494063385a7b0ea7ff407bf19f
  - >-
    Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e <
    6058f0fea10f3caf63a435677358d1b8e9325114
  - Linux 4.10
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T19:21:19.679916Z'
published: '2026-09-03'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T19:26:36.322Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-80754'
references:
  - url: 'https://git.kernel.org/stable/c/6484e00d6778fdf2209cd75940bc3902b276457f'
  - url: 'https://git.kernel.org/stable/c/db4e20265ebda729610ca5cf45ca9437462c3f36'
  - url: 'https://git.kernel.org/stable/c/a6d9646e77da7cab2dff7043a8e9f75e23b836bc'
  - url: 'https://git.kernel.org/stable/c/0739c65e799d4a93fe573ed23255a71fcfcc5438'
  - url: 'https://git.kernel.org/stable/c/9759502f5cd71805923457f183ae5b9533e20c7b'
  - url: 'https://git.kernel.org/stable/c/9b184c8337c6e12df129399007735a7fbcbbcb7b'
  - url: 'https://git.kernel.org/stable/c/a81cafe3c3c2f8494063385a7b0ea7ff407bf19f'
  - url: 'https://git.kernel.org/stable/c/6058f0fea10f3caf63a435677358d1b8e9325114'
tags:
  - cve.org
epss: 0.0012
epssPercentile: 0.01714
ingestedAt: '2026-10-16T19:46:24.300Z'
---

## Overview

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

Input: synaptics-rmi4 - fix F55 transmitter electrode count typo

During F55 sensor detection, the transmitter (TX) electrode count was
incorrectly assigned the value of the receiver (RX) electrode count
due to copy-paste typos.

This incorrect value was then propagated to the driver data and used
by F54 to determine the diagnostics report size. On devices with more
RX than TX electrodes, this inflated the perceived TX count, leading
to incorrect report size calculations and potential out-of-bounds
buffer accesses.

Fix the typos by correctly assigning the TX electrode counts.

## Affected

- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < 6484e00d6778fdf2209cd75940bc3902b276457f`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < db4e20265ebda729610ca5cf45ca9437462c3f36`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < a6d9646e77da7cab2dff7043a8e9f75e23b836bc`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < 0739c65e799d4a93fe573ed23255a71fcfcc5438`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < 9759502f5cd71805923457f183ae5b9533e20c7b`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < 9b184c8337c6e12df129399007735a7fbcbbcb7b`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < a81cafe3c3c2f8494063385a7b0ea7ff407bf19f`
- `Linux >= 6adba43fd222ea362c36296d1a6897c2e28fdc8e < 6058f0fea10f3caf63a435677358d1b8e9325114`
- `Linux 4.10`

## Remediation

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