CVE-2021-22684: Integer Overflow

Q: What is the severity of CVE-2021-22684?

CVE-2021-22684 is classified as a medium severity vulnerability due to potential arbitrary memory allocation leading to unexpected behavior.

Q: How do I fix CVE-2021-22684?

To fix CVE-2021-22684, update to the latest version of the affected software that addresses the integer wrap-around issue.

Q: What can happen if CVE-2021-22684 is exploited?

If exploited, CVE-2021-22684 can lead to arbitrary memory allocation, which may cause application crashes or unstable behavior.

Q: Which products are affected by CVE-2021-22684?

CVE-2021-22684 affects various products including Samsung TizenRT and versions of FreeRTOS, NuttX, and others, typically prior to specific versions.

Q: Is there a workaround for CVE-2021-22684?

Currently, the best mitigation for CVE-2021-22684 is to upgrade the affected software to a version that has been patched to resolve the vulnerability.

Published Aug 31, 2021

Updated

Tizen RT RTOS version 3.0.GBB is vulnerable to integer wrap-around in functionscalloc and mmzalloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash

Affected Software

30 affected components

samsung TizenRT<=3.0

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

Event History

Aug 31, 2021

CVE Published

via MITRE·04:38 PM

Data Sourced

via MITRE·04:38 PM

DescriptionWeakness

Aug 3, 2024

Data Sourced

via ICS·06:54 PM

SeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

ICSA-21-119-04

Frequently Asked Questions

What is the severity of CVE-2021-22684?

CVE-2021-22684 is classified as a medium severity vulnerability due to potential arbitrary memory allocation leading to unexpected behavior.

How do I fix CVE-2021-22684?

To fix CVE-2021-22684, update to the latest version of the affected software that addresses the integer wrap-around issue.

What can happen if CVE-2021-22684 is exploited?

If exploited, CVE-2021-22684 can lead to arbitrary memory allocation, which may cause application crashes or unstable behavior.

Which products are affected by CVE-2021-22684?