Denial of Service via large input to subtle.encrypt()

Summary

A flaw in Node.js WebCrypto implementation can crash the process if the input of `subtle.encrypt()` is a multiple of 2GiB. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**. A flaw was found in the Node.js WebCrypto implementation. A remote attacker could exploit this vulnerability by providing an input to the `subtle.encrypt()` function that is a multiple of 2 gigabytes (GiB). This could lead to a denial of service (DoS) by crashing the Node.js process. This is an Important denial of service vulnerability in Node.js WebCrypto, as a remote attacker can crash the Node.js process by providing a specially crafted large input to the `subtle.encrypt()` function. This could lead to service unavailability in Red Hat environments where Node.js applications process untrusted data with WebCrypto. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770. Fixed by RHSA-2026:35841, RHSA-2026:35842, RHSA-2026:28727, RHSA-2026:29012, RHSA-2026:30172, RHSA-2026:7378 and more — update the affected packages (`sudo dnf update`). Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Hardened Images.