REDHAT-BUG-2431350: High severity npm/node vulnerability

Published Jan 20, 2026
·
Updated

A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the vm module with the timeout option. Under specific timing conditions, buffers allocated with Buffer.alloc and other TypedArray instances like Uint8Array may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.

Affected Software

1 affected component
npm/node

Event History

Jan 20, 2026
Data Sourced
via Red Hat·09:03 PM
DescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2431350?

The severity of REDHAT-BUG-2431350 is high with a score of 7.

2

How do I fix REDHAT-BUG-2431350?

To fix REDHAT-BUG-2431350, update to a patched version of Node.js that addresses the buffer allocation flaw.

3

What is the impact of REDHAT-BUG-2431350?

The impact of REDHAT-BUG-2431350 includes potential exposure of uninitialized memory, which can lead to information disclosure.

4

Which modules are affected by REDHAT-BUG-2431350?

The modules affected by REDHAT-BUG-2431350 include the Node.js 'vm' module when used with the timeout option.

5

When was REDHAT-BUG-2431350 published?

REDHAT-BUG-2431350 was published on January 20, 2026.

Contact

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