Remote code execution via unchecked allocation arithmetic
Published May 3, 2022 · Updated Apr 16, 2025
Integer overflow in NXP MQX RTOS 5.1 and earlier allows remote attackers to crash the system or execute code through crafted allocations. The mem_alloc, _lwmem_alloc, and _partition functions process allocation-size arithmetic without verifying that the result remains in range, producing unintended memory assignments. No authentication or user interaction is required; successful exploitation can interrupt the RTOS or execute attacker-controlled code.
Summary
What happened
Integer overflow in NXP MQX RTOS 5.1 and earlier allows remote attackers to crash the system or execute code through crafted allocations. The mem_alloc, _lwmem_alloc, and _partition functions process allocation-size arithmetic without verifying that the result remains in range, producing unintended memory assignments. No authentication or user interaction is required; successful exploitation can interrupt the RTOS or execute attacker-controlled code.
The record
- CVE
- CVE-2021-22680
- Published
- May 3, 2022
- Updated
- Apr 16, 2025
- Vendor
- NXP Semiconductors
- Product
- MQX RTOS
- Classifications
- CWE-190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 3, 2022CVE publishedPublication date reported by the CVE source.
- Apr 16, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=unspecified <=5.1
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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