---
id: CVE-2026-20558
title: 'In GPU pdma, there is a possible escalation of privilege due to use after free'
summary: >-
  In GPU pdma, there is a possible escalation of privilege due to use after
  free. This could lead to local escalation of privilege with no additional
  execution privileges needed. User interaction is not needed for exploitation.
  Patch ID: A…
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: adp
cwe:
  - CWE-416
vendor: 'MediaTek, Inc.'
product: MediaTek chipset
affected:
  - mediatek_chipset MT6993
  - mediatek_chipset MT8910
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-02T00:00:00+00:00'
published: '2026-11-02'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T04:55:32.919Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-20558'
references:
  - url: 'https://www.mediatek.com/product-security-bulletin/November-2026'
tags:
  - cve.org
epss: 0.00146
epssPercentile: 0.03899
ingestedAt: '2026-11-05T19:30:42.895Z'
---

## Overview

In GPU pdma, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11365070; Issue ID: MSV-9547.

## Affected

- `mediatek_chipset MT6993`
- `mediatek_chipset MT8910`

## Remediation

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