CVE-2021-22636: Texas Instruments TI-RTOS Integer Overflow or Wraparound

Q: What is CVE-2021-22636?

CVE-2021-22636 is a vulnerability in Texas Instruments TI-RTOS that can result in code execution due to an integer overflow vulnerability in 'HeapMem_allocUnprotected'.

Q: How does CVE-2021-22636 affect Texas Instruments TI-RTOS?

CVE-2021-22636 affects Texas Instruments TI-RTOS when configured to use the HeapMem heap.

Q: What is the severity of CVE-2021-22636?

CVE-2021-22636 has a severity level of 7.4 (High).

Q: How can CVE-2021-22636 be fixed?

To fix CVE-2021-22636, users should update to the latest version of Texas Instruments TI-RTOS and apply any patches or security updates provided by the vendor.

Q: Where can I find more information about CVE-2021-22636?

More information about CVE-2021-22636 can be found on the CISA website and the Texas Instruments website.

Published Nov 20, 2023

Updated

Texas Instruments TI-RTOS, when configured to use HeapMem heap(default), malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer overflow vulnerability in 'HeapMem_allocUnprotected' and result in code execution.

Affected Software

43 affected components

All of the following

ti Real-time Operating System

Any of the following

ti CC3200

ti Cc3220r

ti Cc3220s

ti Cc3220sf

ti Cc3230s

ti Cc3230sf

ti Cc3235s

ti Cc3235sf

ti Simplelink Cc13xx Software Development Kit<4.40.00

ti Simplelink Cc26xx Software Development Kit<4.40.00

ti Simplelink Cc32xx Software Development Kit<4.10.03

ti Simplelink Msp432e401y

ti Simplelink Msp432e411y

Multiple Amazon FreeRTOS, Version 10.4.1

Multiple Apache Nuttx OS, Version 9.1.0

Multiple ARM CMSIS-RTOS2, versions prior to 2.1.3

Multiple ARM Mbed OS, Version 6.3.0

Multiple ARM mbed-ualloc, Version 1.3.0

Multiple BlackBerry QNX SDP Versions 6.5.0 SP1 and earlier

Multiple BlackBerry QNX OS for Safety Versions 1.0.1 and earlier safety products compliant with IEC 61508 and/or ISO 26262

Multiple BlackBerry QNX OS for Medical Versions 1.1 and earlier safety products compliant with IEC 62304 A full list of affected QNX products and versions is available here

Multiple A full list of affected QNX products and versions is available here

Multiple Cesanta Software Mongoose OS, v2.17.0

Multiple eCosCentric eCosPro RTOS, Versions 2.0.1 through 4.5.3

Multiple Google Cloud IoT Device SDK, Version 1.0.2

Multiple Media Tek LinkIt SDK, versions prior to 4.6.1

Multiple Micrium OS, Versions 5.10.1 and prior

Multiple Micrium uC/OS: uC/LIB Versions 1.38.xx, Version 1.39.00

Multiple NXP MCUXpresso SDK, versions prior to 2.8.2

Multiple NXP MQX, Versions 5.1 and prior

Multiple Redhat newlib, versions prior to 4.0.0

Multiple RIOT OS, Version 2020.01.1

Multiple Samsung Tizen RT RTOS, versions prior 3.0.GBB

Multiple TencentOS-tiny, Version 3.1.0

Multiple Texas Instruments CC32XX, versions prior to 4.40.00.07

Multiple Texas Instruments SimpleLink MSP432E4XX

Multiple Texas Instruments SimpleLink-CC13XX, versions prior to 4.40.00

Multiple Texas Instruments SimpleLink-CC26XX, versions prior to 4.40.00

Multiple Texas Instruments SimpleLink-CC32XX, versions prior to 4.10.03

Multiple Uclibc-NG, versions prior to 1.0.36

Multiple Windriver VxWorks, prior to 7.0

Multiple Zephyr Project RTOS, versions prior to 2.5

Remediation

Information

Texas Instruments CC32XX – Update to v4.40.00.07 Texas Instruments SimpleLink CC13X0 – Update to v4.10.03 https://www.ti.com/technologies/security/report-product-security-vulnerabilities.html Texas Instruments SimpleLink CC13X2-CC26X2 – Update to v4.40.00 https://www.ti.com/technologies/security/report-product-security-vulnerabilities.html Texas Instruments SimpleLink CC2640R2 – Update to v4.40.00 https://www.ti.com/technologies/security/report-product-security-vulnerabilities.html Texas Instruments SimpleLink MSP432E4 – Confirmed. No update currently planned

Event History

Nov 20, 2023

CVE Published

07:02 PM

Data Sourced

07:02 PM

RemedyDescriptionSeverityWeakness

May 9, 2024

Data Sourced

via ICS·10:29 PM

SeverityWeaknessAffected Software

Frequently Asked Questions

What is CVE-2021-22636?

CVE-2021-22636 is a vulnerability in Texas Instruments TI-RTOS that can result in code execution due to an integer overflow vulnerability in 'HeapMem_allocUnprotected'.

How does CVE-2021-22636 affect Texas Instruments TI-RTOS?

CVE-2021-22636 affects Texas Instruments TI-RTOS when configured to use the HeapMem heap.

What is the severity of CVE-2021-22636?