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CVE-2025-5866: RT-Thread lwp_syscall.c sys_sigprocmask array index

8.0 CVSS

Description

A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index. Es wurde eine Schwachstelle in RT-Thread 5.1.0 entdeckt. Sie wurde als kritisch eingestuft. Es betrifft die Funktion sys_sigprocmask der Datei rt-thread/components/lwp/lwp_syscall.c. Mittels Manipulieren des Arguments how mit unbekannten Daten kann eine improper validation of array index-Schwachstelle ausgenutzt werden.

Classification

CVE ID: CVE-2025-5866

CVSS Base Severity: HIGH

CVSS Base Score: 8.0

CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types

Improper Validation of Array Index Memory Corruption

Affected Products

Vendor: n/a

Product: RT-Thread

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 5.2% (scored less or equal to compared to others)

EPSS Date: 2025-06-12 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-5866
https://vuldb.com/?id.311625
https://vuldb.com/?ctiid.311625
https://vuldb.com/?submit.584127
https://github.com/RT-Thread/rt-thread/issues/10300

Timeline