CVE-2025-48769
Last modified
CVE-2025-48769 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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.. EPSS estimates a 1.51% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Nuttx | >= 7.20, < 12.11.0 |
References
- https://github.com/apache/nuttx/pull/16455Issue Tracking
- https://lists.apache.org/thread/7m83v11ldfq7bvw72n9t5sccocczocjnMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/12/31/11Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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