---
id: "CVE-2026-94202"
kind: "vulnerability"
aliases: ["CVE-2026-94202"]
title: "ThreadX Module Manager: block-pool create reads memory past module bounds"
severity: "medium"
cvss: 4.8
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["embedded", "infrastructure", "rtos", "threadx"]
not_affected_if: ["module-manager-disabled"]
published_at: "2026-10-20T16:17:18+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T04:33:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94202", "first_seen_at": "2026-10-23T21:57:20+00:00"}]
---

# ThreadX Module Manager: block-pool create reads memory past module bounds

The Module Manager's block-pool create dispatcher reads two words of a memory-protected module's extra-parameter array without proving the module owns them. An attacker who controls a module can read memory outside that module's data during the pool create validation.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Look for `common_modules/module_manager/inc/txm_module_manager_dispatch.h` and the function `_txm_module_manager_tx_block_pool_create_dispatch` in your ThreadX source tree
- unknown

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-94202

## From the sources

The Module Manager's block-pool create dispatcher proved that two `ALIGN_TYPE` words of the extra-parameter array a memory-protected module supplies lay inside the module's data, and then used indices 0 through 3 of that array.



One of the two unproved words is read by the dispatcher's own buffer check, which takes index 1 as the pool start and index 2 as the length to range-check it over. So the out-of-bounds read is performed by the validation code itself, before the kernel service is reached, and the size the caller's pool start is then validated against is a word the manager has not proved the module owns. The other unproved word is read when the service's argument list is built.



Vulnerable function: `_txm_module_manager_tx_block_pool_create_dispatch`, in `common_modules/module_manager/inc/txm_module_manager_dispatch.h`.

---

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