---
id: CVE-2025-21473
title: Time-of-check Time-of-use (TOCTOU) Race Condition in Camera_Linux
summary: >-
  Memory corruption when using Virtual cdm (Camera Data Mover) to write
  registers.
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
cwe:
  - CWE-367
vendor: 'Qualcomm, Inc.'
product: Snapdragon
affected:
  - Snapdragon FastConnect 6900
  - Snapdragon FastConnect 7800
  - Snapdragon Snapdragon 8 Gen 1 Mobile Platform
  - Snapdragon WCD9380
  - Snapdragon WSA8830
  - Snapdragon WSA8835
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-08-07T03:55:17.580683Z'
published: '2025-08-06'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:02:55.129Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-21473'
references:
  - url: >-
      https://docs.qualcomm.com/product/publicresources/securitybulletin/august-2025-bulletin.html
tags:
  - cve.org
epss: 0.00068
epssPercentile: 0.00028
ingestedAt: '2026-11-05T20:33:06.541Z'
---

## Overview

Memory corruption when using Virtual cdm (Camera Data Mover) to write registers.

## Affected

- `Snapdragon FastConnect 6900`
- `Snapdragon FastConnect 7800`
- `Snapdragon Snapdragon 8 Gen 1 Mobile Platform`
- `Snapdragon WCD9380`
- `Snapdragon WSA8830`
- `Snapdragon WSA8835`

## Remediation

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