CVE-2021-27439: TencentOS-tiny Integer Overflow or Wraparound
First published: Tue May 03 2022(Updated: )
TencentOS-tiny version 3.1.0 is vulnerable to integer wrap-around in function 'tos_mmheap_alloc incorrect calculation of effective memory allocation size. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Credit: ics-cert@hq.dhs.gov
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | ||
| TencentOS Tiny | =3.1.0 |
Remedy
TencentOS-tiny update available
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-27439.
What is the severity of CVE-2021-27439?
The severity of CVE-2021-27439 is critical with a severity value of 9.8.
What is the affected software?
The affected software is TencentOS-tiny version 3.1.0.
How does CVE-2021-27439 affect the affected software?
CVE-2021-27439 allows for integer wrap-around in the function 'tos_mmheap_alloc' which can lead to arbitrary memory allocation and unexpected behavior such as a crash or remote code injection.
Is there a fix available for CVE-2021-27439?
Please refer to the reference link provided for information on available fixes for CVE-2021-27439.
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