CVE-2026-20507
Received Received - Intake

Audio HAL Use After Free Privilege Escalation

Publication date: 2026-09-07

Last updated on: 2026-09-07

Assigner: MediaTek, Inc.

Description
In Audio HAL, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11191981; Issue ID: MSV-9125.

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Meta Information

Published
2026-09-07
Last Modified
2026-09-07
Generated
2026-09-07
AI Q&A
2026-09-07
EPSS Evaluated
N/A
NVD
CVE-2026-20507
EUVD
EUVD-2026-72200

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mediatek audio_hal *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This is a use-after-free vulnerability in the Audio HAL (Hardware Abstraction Layer) component. It allows an attacker with System privilege to escalate privileges further due to improper memory handling. Exploitation does not require user interaction.

Impact Analysis

If exploited, this vulnerability could allow an attacker with existing System privileges to gain higher privileges on the device. This may lead to unauthorized access to sensitive data or control over device functions.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves a local privilege escalation in Audio HAL, which could allow an attacker with System privileges to gain further access. However, no details are given about data exposure or regulatory implications.

Mitigation Strategies

Apply the patch provided by MediaTek (Patch ID: ALPS11191981) to fix the use-after-free issue in Audio HAL. Ensure the System privilege is properly secured to prevent local escalation of privilege.

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