What’s Vulnerable › Vulnerabilities

CVE-2025-5865: RT-Thread Parameter lwp_syscall.c sys_select memory corruption

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-06-09 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability was found in RT-Thread 5.1.0. It has been rated as critical. Affected by this issue is the function sys_select of the file rt-thread/components/lwp/lwp_syscall.c of the component Parameter Handler. The manipulation of the argument timeout leads to memory corruption. The vendor explains, that "[t]he timeout parameter should be checked to check if it can be accessed correctly in kernel mode and used temporarily in kernel memory."

Affected products

• RT-Thread: 5.1.0

References

• https://github.com/RT-Thread/rt-thread/issues/10298
• https://github.com/RT-Thread/rt-thread/issues/10298#issuecomment-2894952150
• https://vuldb.com/?ctiid.311624
• https://vuldb.com/?id.311624
• https://vuldb.com/?submit.584124
• https://github.com/RT-Thread/rt-thread/issues/10298

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