CVE-2024-27407 – This CVE-2024-27407 is a buffer overflow vulner... (How to Fix)

Q: What is the severity of CVE-2024-27407?

CVE-2024-27407 has a CVSS score of 8.4 (HIGH). This CVE-2024-27407 is a buffer overflow vulnerability in the Linux kernel's NTFS3 filesystem driver, specifically in the mi_enum_attr() function. Attackers could exploit this to cause kernel crashes (denial of service) or potentially execute arbitrary code with kernel privileges. All Linux systems using the NTFS3 driver are affected.

📋 TL;DR

This CVE-2024-27407 is a buffer overflow vulnerability in the Linux kernel's NTFS3 filesystem driver, specifically in the mi_enum_attr() function. Attackers could exploit this to cause kernel crashes (denial of service) or potentially execute arbitrary code with kernel privileges. All Linux systems using the NTFS3 driver are affected.

💻 Affected Systems

Products:

Linux kernel with NTFS3 driver

Versions: Linux kernel versions with NTFS3 driver before the fix commits

Operating Systems: Linux distributions using affected kernel versions

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects systems where NTFS3 filesystem driver is loaded/used. Many distributions may not have this enabled by default.

📦 What is this software?

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Local privilege escalation to kernel-level code execution, leading to complete system compromise.

🟠

Likely Case

Kernel panic leading to system crash and denial of service.

🟢

If Mitigated

System remains stable with proper kernel hardening and exploit mitigations in place.

🌐 Internet-Facing: LOW - This requires local access to the system.

🏢 Internal Only: MEDIUM - Internal users with local access could exploit this vulnerability.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Requires local access and knowledge of NTFS3 driver internals. No public exploits known at this time.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Linux kernel versions containing the fix commits referenced in the CVE

Vendor Advisory: https://git.kernel.org/stable/c/1c0a95d99b1b2b5d842e5abc7ef7eed1193b60d7

Restart Required: Yes

Instructions:

1. Update Linux kernel to patched version from your distribution's repositories. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.

🔧 Temporary Workarounds

Disable NTFS3 module

linux

Prevent loading of the vulnerable NTFS3 kernel module

echo 'blacklist ntfs3' >> /etc/modprobe.d/blacklist-ntfs3.conf
rmmod ntfs3

Mount restrictions

linux

Restrict mounting of NTFS filesystems to trusted users only

Add 'user_allow_other' to /etc/fuse.conf if using FUSE
Set appropriate mount permissions in /etc/fstab

🧯 If You Can't Patch

Implement strict access controls to limit local user access to systems
Enable kernel hardening features like KASLR, stack canaries, and SMEP/SMAP

🔍 How to Verify

Check if Vulnerable:

Check if NTFS3 module is loaded: lsmod | grep ntfs3. Check kernel version against patched versions.

Check Version:

uname -r

Verify Fix Applied:

Verify kernel version is updated and NTFS3 module version matches patched kernel. Test mounting NTFS filesystem.

📡 Detection & Monitoring

Log Indicators:

Kernel panic messages in /var/log/kern.log or dmesg
System crashes when mounting NTFS filesystems

Network Indicators:

None - this is a local vulnerability

SIEM Query:

source="kernel" AND ("panic" OR "Oops" OR "BUG") AND "ntfs3"

📊 Metadata

CVE ID: CVE-2024-27407

CVSS v3 Score: 8.4 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-120

Published: May 17, 2024

Last Updated: November 3, 2025

🔗 References

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🔗 Related Vulnerabilities

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