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.
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History

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

Type Values Removed Values Added
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

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

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

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

Link: CVE-2025-48769

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2026-01-02T16:45:26.640

Link: CVE-2025-48769

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses