CVE-2026-56906

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BaseFortify

Publication date: 2026-10-06

Last updated on: 2026-10-07

Assigner: Google Devices

Description

In ep_free of eventpoll.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-06

Last Modified

2026-10-07

Generated

2026-10-19

AI Q&A

2026-10-06

EPSS Evaluated

2026-10-18

NVD

CVE-2026-56906

EUVD

EUVD-2026-93787

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Android	Android kernel

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Attack-Flow Graph

Executive Summary

This is a use-after-free vulnerability in the Linux kernel's eventpoll.c file, specifically in the ep_free function. It occurs due to a race condition that allows an attacker to exploit freed memory, potentially leading to local privilege escalation. No user interaction or additional privileges are required for exploitation.

Detection Guidance

This vulnerability involves a race condition in eventpoll.c leading to use-after-free. Detection typically requires kernel-level monitoring or auditing tools. Check for kernel logs for use-after-free errors or race conditions in eventpoll-related operations. Use tools like ftrace, perf, or eBPF to trace syscalls related to epoll or eventpoll. No specific commands are provided in the context.

Impact Analysis

This vulnerability could allow an attacker with local access to escalate their privileges on your system. Since it requires no additional execution privileges or user interaction, it poses a significant risk if exploited. Systems running vulnerable versions of the Linux kernel are affected.

Compliance Impact

This vulnerability involves a use-after-free issue due to a race condition in eventpoll.c, potentially allowing local privilege escalation. It does not directly impact compliance with GDPR, HIPAA, or similar standards as it is a local system vulnerability requiring no user interaction.

Mitigation Strategies

Apply the latest security patches or updates from Google for the affected Android system to address the use-after-free issue in eventpoll.c.

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