CVE-2025-5868 RT-Thread lwp_syscall.c sys_thread_sigprocmask array index
Attackers can exploit improper array index validation in RT-Thread's signal handling to potentially execute arbitrary code or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-5868?
CVE-2025-5868 is a high-severity vulnerability in RT-Thread, published on 9 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability, which was classified as critical, has been found in RT-Thread 5.1.0. This issue affects the function sys_thread_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index.
Which versions are affected by CVE-2025-5868?
It affects 1 product.
Products include Rt-Thread Rt-Thread.
How do I fix CVE-2025-5868?
No fix has been published for CVE-2025-5868 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-5868 being exploited?
There is no known exploitation of CVE-2025-5868 in the wild and no public exploit code.
Other vulnerabilities in RT-Thread
Sources
Also known as GHSA-5cq9-g28q-5w6r.