vulnerability

Red Hat: CVE-2025-55131: nodejs: Nodejs uninitialized memory exposure (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:M/Au:S/C:C/I:C/A:P)
Published
Jan 20, 2026
Added
Feb 6, 2026
Modified
Feb 9, 2026

Description

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.

Solutions

redhat-upgrade-nodejsredhat-upgrade-nodejs-debuginforedhat-upgrade-nodejs-develredhat-upgrade-nodejs-docsredhat-upgrade-nodejs-full-i18nredhat-upgrade-nodejs-libsredhat-upgrade-nodejs-libs-debuginforedhat-upgrade-nodejs-npmredhat-upgrade-nodejs22-debuginforedhat-upgrade-nodejs22-debugsourceredhat-upgrade-nodejs24redhat-upgrade-nodejs24-debuginforedhat-upgrade-nodejs24-debugsourceredhat-upgrade-nodejs24-develredhat-upgrade-nodejs24-docsredhat-upgrade-nodejs24-full-i18nredhat-upgrade-nodejs24-libsredhat-upgrade-nodejs24-libs-debuginforedhat-upgrade-nodejs24-npm
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