CVE-2026-20492: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition in MediaTek, Inc. MediaTek chipset
CVE-2026-20492 is a race condition vulnerability (CWE-367) in the Audio HAL component of MediaTek chipsets. The flaw can cause the system to become unresponsive, resulting in a local denial of service. Exploitation requires user execution privileges but does not require user interaction. The issue affects specific MediaTek chipset models including MT2735, MT2737, MT6880, MT6890, MT6988, and MT6990. Patch identifiers are known but no official remediation status is provided.
AI Analysis
Technical Summary
This vulnerability involves a time-of-check to time-of-use (TOCTOU) race condition in the Audio HAL of certain MediaTek chipsets. The race condition can lead to the system becoming unresponsive, effectively causing a local denial of service. Exploitation requires that the attacker has user execution privileges but does not require any user interaction. The affected chipsets are MT2735, MT2737, MT6880, MT6890, MT6988, and MT6990. Patch IDs ALPS10960026 and AUTO00851250 are referenced for different chipset groups, but no explicit vendor advisory or patch status is provided in the data.
Potential Impact
Successful exploitation results in a local denial of service by causing the system to become unresponsive. The attacker must have user execution privileges, but no user interaction is necessary. There is no indication of remote exploitation or privilege escalation beyond user-level execution.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Patch IDs ALPS10960026 and AUTO00851250 are referenced for the affected chipsets, indicating that fixes may exist. Until official confirmation is obtained, users should monitor MediaTek advisories for updates and apply patches when available.
CVE-2026-20492: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition in MediaTek, Inc. MediaTek chipset
Description
CVE-2026-20492 is a race condition vulnerability (CWE-367) in the Audio HAL component of MediaTek chipsets. The flaw can cause the system to become unresponsive, resulting in a local denial of service. Exploitation requires user execution privileges but does not require user interaction. The issue affects specific MediaTek chipset models including MT2735, MT2737, MT6880, MT6890, MT6988, and MT6990. Patch identifiers are known but no official remediation status is provided.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a time-of-check to time-of-use (TOCTOU) race condition in the Audio HAL of certain MediaTek chipsets. The race condition can lead to the system becoming unresponsive, effectively causing a local denial of service. Exploitation requires that the attacker has user execution privileges but does not require any user interaction. The affected chipsets are MT2735, MT2737, MT6880, MT6890, MT6988, and MT6990. Patch IDs ALPS10960026 and AUTO00851250 are referenced for different chipset groups, but no explicit vendor advisory or patch status is provided in the data.
Potential Impact
Successful exploitation results in a local denial of service by causing the system to become unresponsive. The attacker must have user execution privileges, but no user interaction is necessary. There is no indication of remote exploitation or privilege escalation beyond user-level execution.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Patch IDs ALPS10960026 and AUTO00851250 are referenced for the affected chipsets, indicating that fixes may exist. Until official confirmation is obtained, users should monitor MediaTek advisories for updates and apply patches when available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.026Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a700184bf32cb7a34d5cad1
Added to database: 08/03/2026, 02:48:36 UTC
Last enriched: 08/03/2026, 03:07:33 UTC
Last updated: 08/03/2026, 03:07:33 UTC
Views: 2
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