CWE-368

Context Switching Race Condition

A product performs a series of non-atomic actions to switch between contexts that cross privilege or other security boundaries, but a race condition allows an attacker to modify or misrepresent the product's behavior during the switch.

CVE-2021-32025 (GCVE-0-2021-32025)
Vulnerability from cvelistv5
Published
2022-03-09 20:37
Modified
2025-08-22 15:36
Severity ?
8.1 (High) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
  • Elevation of privilege
  • CWE-368 - Context Switching Race Condition
Summary
An elevation of privilege vulnerability in the QNX Neutrino Kernel of affected versions of QNX Software Development Platform version(s) 6.4.0 to 7.0, QNX Momentics all 6.3.x versions, QNX OS for Safety versions 1.0.0 to 1.0.2, QNX OS for Safety versions 2.0.0 to 2.0.1, QNX for Medical versions 1.0.0 to 1.1.1, and QNX OS for Medical version 2.0.0 could allow an attacker to potentially access data, modify behavior, or permanently crash the system.
References
http://support.blackberry.com/kb/articleDetail?articleNumber=000090868x_refsource_MISC
Impacted products
Vendor Product Version
BlackBerry QNX Software Development Platform (SDP), QNX OS for Medical (QOSM), and QNX OS for Safety (QOS) Version: QNX SDP 6.4.0 to 7.0
Version: QNX Momentics all 6.3.x versions
Version: QNX OS for Safety versions 1.0.0 to 1.0.2 safety products compliant with IEC 61508 and/or ISO 26262
Version: QNX OS for Safety versions 2.0.0 to 2.0.1 safety products compliant with IEC 61508 and/or ISO 26262
Version: QNX OS for Medical versions 1.0.0 to 1.1.1 safety products compliant with IEC 62304
Version: QNX OS for Medical versions 2.0.0 safety product compliant with IEC 62304
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No mitigation information available for this CWE.

CAPEC-26: Leveraging Race Conditions

The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.

CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions

This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.

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