VULNERABILITY INTELLIGENCE

CVE-2021-22156

CVSS score9 CRITICAL

EPSS probability1.79%

CISA KEVNot currently listed

Published2021-08-17

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

secure@blackberry.com: CWE-190
nvd@nist.gov: CWE-190

Primary references

secure@blackberry.com — Patch, Vendor Advisory
secure@blackberry.com — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory