CVE-2021-22156: Integer Overflow

Q: What is the severity of CVE-2021-22156?

The severity of CVE-2021-22156 is critical with a CVSS score of 9.8.

Q: Which software versions are affected by CVE-2021-22156?

Affected versions include BlackBerry® QNX Software Development Platform versions 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier.

Q: How does CVE-2021-22156 impact the BlackBerry® QNX Software Development Platform?

CVE-2021-22156 allows an attacker to exploit an integer overflow vulnerability in the calloc() function of the C runtime library, potentially leading to unauthorized access or denial of service.

Q: Are there any references or additional information available for CVE-2021-22156?

Yes, you can find more information about CVE-2021-22156 on the official BlackBerry support website [1] and the Cisco Security Advisory [2].

Published Aug 17, 2021

Updated

An integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Development Platform (SDP) version(s) 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier that could allow an attacker to potentially perform a denial of service or execute arbitrary code.

Affected Software

34 affected components

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

BlackBerry QNX Software Development Platform<6.5.0

BlackBerry QNX Software Development Platform=6.5.0

BlackBerry QNX Software Development Platform=6.5.0-sp1

BlackBerry QNX OS for Medical<=1.1.1

BlackBerry QNX OS for Safety<=1.0.2

Remediation

Patch Available

https://support.blackberry.com/kb/articleDetail?articleNumber=000082334

Event History

Aug 17, 2021

CVE Published

via MITRE·06:35 PM

Data Sourced

via MITRE·06:35 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·07:15 PM

RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

ICSA-21-119-04

Frequently Asked Questions

What is CVE-2021-22156?

CVE-2021-22156 is an integer overflow vulnerability in the calloc() function of the C runtime library of affected versions of BlackBerry® QNX Software Development Platform (SDP) version(s) 6.5.0SP1 and earlier, QNX OS for Medical 1.1 and earlier, and QNX OS for Safety 1.0.1 and earlier that could allow an attacker to...

What is the severity of CVE-2021-22156?

The severity of CVE-2021-22156 is critical with a CVSS score of 9.8.

Which software versions are affected by CVE-2021-22156?