CVE-2021-27421: NXP MCUXpresso SDK Integer Overflow or Wraparound
First published: Tue May 03 2022(Updated: )
NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| NXP MCUXpresso SDK | <2.8.2 | |
| Amazon FreeRTOS | ||
| Apache NuttX | ||
| ARM CMSIS-RTOS2 | ||
| Arm Mbed OS | ||
| Arm Mbed ualloc | ||
| QNX | ||
| BlackBerry QNX OS for Safety | ||
| BlackBerry QNX OS for Medical | ||
| QNX | ||
| Mongoose OS | ||
| eCosCentric eCosPro RTOS | ||
| Google Cloud IoT Device SDK | ||
| MediaTek LinkIt SDK | ||
| Micrium OS | ||
| Micrium uC/OS | ||
| NXP MCUXpresso SDK | ||
| NXP MQX | ||
| newlib | ||
| RIOT OS | ||
| Samsung Tizen RT | ||
| TencentOS-tiny | ||
| Texas Instruments SimpleLink CC32XX | ||
| Texas Instruments SimpleLink MSP432E4 SDK | ||
| Texas Instruments SimpleLink CC13X2 SDK | ||
| Texas Instruments SimpleLink CC26XX | ||
| Texas Instruments SimpleLink CC32XX | ||
| uClibc | ||
| Wind River VxWorks | ||
| Zephyr Project RTOS |
Remedy
Update NXP MCUXpresso SDK to 2.9.0 or later
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Reference Links
Frequently Asked Questions
What is CVE-2021-27421?
CVE-2021-27421 is a vulnerability in NXP MCUXpresso SDK versions prior to 2.8.2 that allows an attacker to access memory locations outside the bounds of a specified array.
How severe is CVE-2021-27421?
CVE-2021-27421 has a severity rating of 9.8 out of 10, indicating a critical vulnerability.
Which software versions are affected by CVE-2021-27421?
NXP MCUXpresso SDK versions prior to 2.8.2 are affected by CVE-2021-27421.
What is the impact of CVE-2021-27421?
CVE-2021-27421 can lead to unexpected behavior, such as segmentation faults, when assigning a specific block of memory from the heap.
How can CVE-2021-27421 be fixed?
To fix CVE-2021-27421, update to NXP MCUXpresso SDK version 2.8.2 or later.
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