CVE-2026-20511
Received Received - Intake

Memory Corruption in SurfaceFlinger via Use After Free

Publication date: 2026-09-07

Last updated on: 2026-09-07

Assigner: MediaTek, Inc.

Description
In SurfaceFlinger, there is a possible memory corruption 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: ALPS11123860; Issue ID: MSV-8890.

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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-2026-20511
EUVD
EUVD-2026-72204

Affected Vendors & Products

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

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

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Executive Summary

This vulnerability is a memory corruption issue in SurfaceFlinger, a component in Android systems. It occurs due to a use-after-free condition, where a program continues to use memory after it has been freed, leading to potential corruption. This could allow an attacker with System privilege to escalate their privileges locally.

Impact Analysis

If exploited, this vulnerability could allow an attacker who already has System privileges to further escalate their access, potentially gaining control over the device. This could lead to unauthorized access to sensitive data or system functions.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves memory corruption in SurfaceFlinger, which could lead to local privilege escalation if an attacker already has System privilege. Without additional context on data exposure or processing, its compliance impact remains unclear.

Mitigation Strategies

Apply the provided patch ID ALPS11123860 to SurfaceFlinger to address the use-after-free issue. Ensure the system privilege is not granted to untrusted actors.

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