CVE-2025-68365: fs/ntfs3: Initialize allocated memory before use

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-24 · updated 2026-10-13
Weakness: CWE-908

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.

Affected products

Linux kernel: from 5.15 before 5.15.199; from 5.16 before 6.1.162; from 6.2 before 6.6.122; from 6.7 before 6.12.68; from 6.13 before 6.18.2 — fixed in 5.15.199, 6.1.162, 6.12.68, 6.18.2, 6.6.122

How to fix

Upgrade to a fixed version: Linux kernel 5.15.199, 6.1.162, 6.12.68, 6.18.2. Check the vendor advisory for mitigations.

References

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