Vulnerability Description
Use After Free vulnerability was discovered in fs/vfs/fs_rename 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Nuttx | >= 7.20, < 12.11.0 |
Related Weaknesses (CWE)
References
- https://github.com/apache/nuttx/pull/16455Issue Tracking
- https://lists.apache.org/thread/7m83v11ldfq7bvw72n9t5sccocczocjnMailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2025/12/31/11Mailing ListThird Party Advisory
FAQ
What is CVE-2025-48769?
CVE-2025-48769 is a vulnerability with a CVSS score of 8.1 (HIGH). Use After Free vulnerability was discovered in fs/vfs/fs_rename code of the Apache NuttX RTOS, that due recursive implementation and single buffer use by two different pointer variables allowed arbitr...
How severe is CVE-2025-48769?
CVE-2025-48769 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48769?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Nuttx.