CVE-2026-87765
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Improper Input Validation in APSYS DVFS Driver

Publication date: 2026-10-12

Last updated on: 2026-10-16

Assigner: Unisoc

Description
In the kernel apsys DVFS driver, there is a possible out-of-bounds read or hardware register corruption due to improper input validation of the frequency index. This could lead to system instability or denial of service with local privileges.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-16
Generated
2026-11-08
AI Q&A
2026-10-12
EPSS Evaluated
2026-11-07
NVD
CVE-2026-87765
EUVD
EUVD-2026-97140

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

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Executive Summary

This vulnerability is in the kernel apsys DVFS driver where improper input validation of the frequency index can cause an out-of-bounds read or hardware register corruption. This may lead to system instability or denial of service with local privileges.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for identifying this vulnerability on a system or network. General approaches may involve checking kernel logs for errors related to the apsys DVFS driver or monitoring for system instability.

Impact Analysis

An attacker with local access could exploit this to crash the system or cause instability, potentially leading to denial of service. It requires local privileges but does not need user interaction.

Compliance Impact

The vulnerability could lead to system instability or denial of service with local privileges, which may impact compliance with standards like GDPR or HIPAA by compromising data availability or integrity. However, specific compliance impacts are not detailed in the provided CVE information.

Mitigation Strategies

Update the kernel to the latest patched version provided by Unisoc. Disable the apsys DVFS driver if not required. Restrict local user privileges to minimize attack surface. Monitor system logs for unusual hardware register changes or instability.

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