---
id: CVE-2026-56879
title: >-
  In gmc_mb_msg_handler of gmc_mba.c, there is a possible memory corruption due
  to a confused deputy
summary: >-
  In gmc_mb_msg_handler of gmc_mba.c, there is a possible memory corruption due
  to a confused deputy. This could lead to local escalation of privilege with
  System execution privileges needed. User interaction is not needed for
  exploitation.
severity: medium
cvss: 6.7
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-441
vendor: google
product: android
affected:
  - android
published: '2026-09-15'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T17:19:34.230'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56879'
references:
  - url: 'https://source.android.com/docs/security/bulletin/pixel/2026/2026-09-01'
    label: dsap-vuln-management@google.com
tags:
  - nvd
  - cve.org
epss: 0.00094
epssPercentile: 0.00571
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T20:59:05.374536Z'
ingestedAt: '2026-09-15T18:41:59.169Z'
---

## Overview

In gmc_mb_msg_handler of gmc_mba.c, there is a possible memory corruption due to a confused deputy. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

## Affected

- `android`

## Remediation

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