CVE-2025-48769: Apache NuttX RTOS: fs/vfs/fs_rename: use after free
Use After Free vulnerability was discovered in fs/vfs/fsrename code of the Apache NuttX RTOS, that due recursive implementation and single buffer use by two different pointer variables allowed arbitrary user provided size buffer reallocation and write to the previously freed heap chunk, that in specific cases could cause unintended virtual filesystem rename/move operation results.
This issue affects Apache NuttX RTOS: from 7.20 before 12.11.0.
Users of virtual filesystem based services with write access especially when exposed over the network (i.e. FTP) are affected and recommended to upgrade to version 12.11.0 that fixes the issue.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-48769?
CVE-2025-48769 has a high severity level due to its potential for arbitrary memory write vulnerabilities.
How do I fix CVE-2025-48769?
To fix CVE-2025-48769, update your Apache NuttX RTOS to a version above 12.11.0.
What software is affected by CVE-2025-48769?
CVE-2025-48769 affects Apache NuttX RTOS versions from 7.20 up to 12.11.0.
What type of vulnerability is CVE-2025-48769?
CVE-2025-48769 is classified as a Use After Free vulnerability.
What causes the vulnerability in CVE-2025-48769?
CVE-2025-48769 is caused by recursive implementation and shared use of a single buffer by different pointer variables.