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VulnerabilityPublished Updated

CVE-2025-37806: Linux kernel · fs/ntfs3: Keep write operations atomic

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 14:05 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

AI-suggested

A fix has been implemented in the Linux kernel to synchronize write and ioctl operations using inode locking, preventing the NULL pointer dereference. Users should update to a Linux kernel version that includes this fix once it is released. Until then, no other specific mitigations are indicated.

Description

CVE-2025-37806 is a Linux kernel vulnerability in the NTFS3 filesystem driver where write operations were not kept atomic. This flaw allowed a race condition between a write operation and an ioctl call clearing the compress flag, leading to a NULL pointer dereference and kernel crash. The issue was fixed by synchronizing ioctl and write operations using an inode lock.

References

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