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Status published
Critical
CVE-2021-22156
An integer overflow vulnerability in the calloc() function of the...
Vulnerability 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 Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
BlackBerry
View all reports →Affected Software
QNX Software Development Platform (SDP), QNX OS for Medical and QNX OS for Safety
Vulnerable Versions:
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
Timeline
Official Publish:
August 17th, 2021
Last Modified:
August 22nd, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H