CVE-2021-22156

Severity CVSS v4.0:

Pending analysis

Type:

CWE-190 Integer Overflow or Wraparound

Publication date:

17/08/2021

Last modified:

22/08/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.00 CRITICAL
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.00

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

6.80

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:blackberry:qnx_software_development_platform::::::::		6.5.0 (excluding)
cpe:2.3:a:blackberry:qnx_software_development_platform:6.5.0:-::::::
cpe:2.3:a:blackberry:qnx_software_development_platform:6.5.0:sp1::::::
cpe:2.3:o:blackberry:qnx_os_for_medical::::::::		1.1.1 (including)
cpe:2.3:o:blackberry:qnx_os_for_safety::::::::		1.0.2 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-22156

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools