CVE-2025-5866: RT-Thread lwp_syscall.c sys_sigprocmask array index
Published Jun 9, 2025
·Updated
A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function syssigprocmask of the file rt-thread/components/lwp/lwpsyscall.c. The manipulation of the argument how leads to improper validation of array index.
Affected Software
2 affected components
RT-Thread RT-Thread
RT-Thread RT-Thread=5.1.0
Event History
Jun 9, 2025
CVE Published
via MITRE·07:00 AM
Data Sourced
via MITRE·07:00 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:15 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-5866?
CVE-2025-5866 is classified as a critical vulnerability.
2
What software is affected by CVE-2025-5866?
CVE-2025-5866 affects RT-Thread version 5.1.0.
3
What is the nature of the vulnerability in CVE-2025-5866?
The vulnerability involves improper validation of an array index due to manipulation of the argument in the sys_sigprocmask function.
4
How do I fix CVE-2025-5866?
To fix CVE-2025-5866, apply the latest security patches or updates provided by RT-Thread.
5
Is there a known exploit for CVE-2025-5866?
The specifics of any known exploit for CVE-2025-5866 have not been publicly disclosed.