What’s Vulnerable › Vulnerabilities

CVE-2020-10024: ARM Platform Uses Signed Integer Comparison When Validating Syscall Numbers

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-11 · updated 2026-06-17
• Weakness: CWE-697

Description

The arm platform-specific code uses a signed integer comparison when validating system call numbers. An attacker who has obtained code execution within a user thread is able to elevate privileges to that of the kernel. See NCC-ZEP-001 This issue affects: zephyrproject-rtos zephyr version 1.14.0 and later versions. version 2.1.0 and later versions.

Affected products

• zephyrproject zephyr: 1.14.2, 2.1.0

References

• https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10024
• https://github.com/zephyrproject-rtos/zephyr/pull/23323
• https://github.com/zephyrproject-rtos/zephyr/pull/23498
• https://github.com/zephyrproject-rtos/zephyr/pull/23535
• https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-30
• https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10024
• https://github.com/zephyrproject-rtos/zephyr/pull/23323
• https://github.com/zephyrproject-rtos/zephyr/pull/23498
• https://github.com/zephyrproject-rtos/zephyr/pull/23535
• https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-30

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