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.
History

Tue, 06 Jan 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*

Tue, 06 Jan 2026 00:15:00 +0000

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Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Jan 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Mon, 05 Jan 2026 10:45:00 +0000

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First Time appeared Apache
Apache nuttx
Vendors & Products Apache
Apache nuttx

Thu, 01 Jan 2026 17:30:00 +0000

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References

Thu, 01 Jan 2026 16:30:00 +0000

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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.
Title Apache NuttX RTOS: fs/vfs/fs_rename: use after free
Weaknesses CWE-416
References

cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published: 2026-01-01T16:14:33.415Z

Updated: 2026-01-05T20:07:09.425Z

Reserved: 2025-05-26T01:39:04.334Z

Link: CVE-2025-48769

cve-icon Vulnrichment

Updated: 2026-01-01T17:07:57.326Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-01T17:15:43.243

Modified: 2026-01-06T14:35:26.893

Link: CVE-2025-48769

cve-icon Redhat

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