CVE-2025-68365
Unknown Unknown - Not Provided
Uninitialized Memory Use in Linux Kernel NTFS3 Driver

Publication date: 2025-12-24

Last updated on: 2026-02-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Initialize allocated memory before use KMSAN reports: Multiple uninitialized values detected: - KMSAN: uninit-value in ntfs_read_hdr (3) - KMSAN: uninit-value in bcmp (3) Memory is allocated by __getname(), which is a wrapper for kmem_cache_alloc(). This memory is used before being properly cleared. Change kmem_cache_alloc() to kmem_cache_zalloc() to properly allocate and clear memory before use.
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Meta Information
Published
2025-12-24
Last Modified
2026-02-26
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-14
NVD
CVE-2025-68365
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.16 (inc) to 6.1.162 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.122 (exc)
linux linux_kernel From 5.15 (inc) to 5.15.199 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.2 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.68 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-908 The product uses or accesses a resource that has not been initialized.
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Executive Summary

This vulnerability in the Linux kernel's NTFS3 filesystem driver involves the use of uninitialized memory. Specifically, memory allocated by __getname() (which wraps kmem_cache_alloc()) is used before it is properly cleared, leading to potential use of uninitialized values. The fix changes the allocation function to kmem_cache_zalloc(), which zeroes the memory before use, preventing uninitialized memory usage.

Impact Analysis

Using uninitialized memory can lead to unpredictable behavior, including potential information leaks, crashes, or security issues such as exposing sensitive data or enabling exploitation by attackers. Since this vulnerability involves uninitialized memory in the NTFS3 driver, it could impact system stability or security when handling NTFS filesystems.

Mitigation Strategies

The vulnerability is resolved by initializing allocated memory before use in the Linux kernel's ntfs3 filesystem driver. To mitigate this vulnerability, update your Linux kernel to the version that includes the fix where kmem_cache_alloc() is replaced with kmem_cache_zalloc() in the ntfs3 driver. This ensures memory is properly cleared before use.

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