---
id: CVE-2026-23789
title: >-
  An issue was discovered in MFC in Samsung Mobile Processor and Wearable
  Processor Exynos 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580,
  2500, 2600, 1680, W920, W930, and W1000
summary: >-
  An issue was discovered in MFC in Samsung Mobile Processor and Wearable
  Processor Exynos 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580,
  2500, 2600, 1680, W920, W930, and W1000. A double-free vulnerability in the
  Exynos MFC en…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-415
vendor: Samsung
product: Exynos 850 firmware
affected:
  - exynos_850_firmware <= 2025-12-23
published: '2026-09-14'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:56:19.073'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23789'
references:
  - url: >-
      https://semiconductor.samsung.com/support/quality-support/product-security-updates/
    label: cve@mitre.org
  - url: >-
      https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2026-23789/
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00109
epssPercentile: 0.01113
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T14:24:11.782528Z'
ingestedAt: '2026-09-14T15:23:07.467Z'
---

## Overview

An issue was discovered in MFC in Samsung Mobile Processor and Wearable Processor Exynos 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, 2600, 1680, W920, W930, and W1000. A double-free vulnerability in the Exynos MFC encoder driver (due to improper cleanup of dma_buf references during error handling) leads to kernel memory corruption and potential arbitrary code execution.

## Remediation

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