CVE-2021-22156

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190

Affected software

Vendor	Product	Versions
BlackBerry	QNX Software Development Platform (SDP), QNX OS for Medical and QNX OS for Safety	QNX SDP 6.5.0 SP1 and earlier; QNX OS for Medical 1.1 and earlier; QNX OS for Safety 1.0.1 and earlier

References

https://support.blackberry.com/kb/articleDetail?articleNumber=000082334Patch, Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdLThird Party Advisory
https://support.blackberry.com/kb/articleDetail?articleNumber=000082334Patch, Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-qnx-TOxjVPdLThird Party Advisory

Timeline

Published: Aug 17, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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