CVE-2023-53732
Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-10-22

Last updated on: 2025-10-22

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix NULL dereference in ni_write_inode Syzbot reports a NULL dereference in ni_write_inode. When creating a new inode, if allocation fails in mi_init function (called in mi_format_new function), mi->mrec is set to NULL. In the error path of this inode creation, mi->mrec is later dereferenced in ni_write_inode. Add a NULL check to prevent NULL dereference.

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Meta Information

Published
2025-10-22
Last Modified
2025-10-22
Generated
2026-07-07
AI Q&A
2025-10-22
EPSS Evaluated
2026-07-06
NVD
CVE-2023-53732

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a NULL pointer dereference in the Linux kernel's NTFS3 filesystem driver. Specifically, when creating a new inode, if a memory allocation fails in the mi_init function, a pointer (mi->mrec) is set to NULL. Later, in the error handling path, this NULL pointer is dereferenced in the ni_write_inode function, which can cause a kernel crash or instability. The fix involves adding a NULL check to prevent this dereference.

Impact Analysis

This vulnerability can cause the Linux kernel to crash or become unstable due to a NULL pointer dereference when handling NTFS filesystem operations. This could lead to denial of service or system instability if exploited.

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