CVE-2026-58824
Received Received - Intake

Memory Corruption in Android pkvm

Publication date: 2026-11-02

Last updated on: 2026-11-02

Assigner: Android (associated with Google Inc. or Open Handset Alliance)

Description
In __pkvm_load_tracing of trace.c, there is a possible out-of-bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

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Meta Information

Published
2026-11-02
Last Modified
2026-11-02
Generated
2026-11-02
AI Q&A
2026-11-02
EPSS Evaluated
N/A
NVD
CVE-2026-58824

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Google Android Android kernel

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Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is an out-of-bounds write issue in the pKVM (Protected Kernel Virtual Machine) tracing functionality for ARM64 systems. It occurs in the function __pkvm_load_tracing of trace.c due to incorrect bounds checking. The problem arises when an untrusted host virtual address is passed to rb_cpu_fits_desc() instead of the hypervisor virtual address during trace buffer initialization. This leads to nonsensical bounds comparisons and potential memory corruption.

Impact Analysis

This vulnerability could allow a local attacker to escalate privileges on the affected system. Since no additional execution privileges or user interaction are required, it poses a significant risk for unauthorized access and potential control over the device. Systems using pKVM for ARM64, particularly those in Android environments, are affected.

Mitigation Strategies

Apply the patch from the provided Android kernel commits (5a6735b89ba7c8684d36e2ecd9b02e834e97de9c or 8be8949794c96f10348fdd3d8dc7740fdfecd4e2) to ensure hypervisor virtual addresses are used in pKVM trace buffer initialization.

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