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.
References (3)
Core 3
Core References
Issue Tracking patch
https://github.com/apache/nuttx/pull/16455
Mailing List, Vendor Advisory vendor-advisory
https://lists.apache.org/thread/7m83v11ldfq7bvw72n9t5sccocczocjn
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/12/31/11
Scores
CVSS v3
8.1
EPSS
0.0002
EPSS Percentile
5.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-416
Status
published
Products (1)
apache/nuttx
7.20 - 12.11.0
Published
Jan 01, 2026
Tracked Since
Feb 18, 2026