Linux Kernel up to 6.17.7 ntfs3 may_open privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.15.196/6.1.158/6.6.116/6.12.57/6.17.7. Affected by this issue is the function may_open of the component ntfs3. Executing a manipulation can lead to an unknown weakness. This vulnerability is registered as CVE-2025-40313. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 5.15.196/6.1.158/6.6.116/6.12.57/6.17.7. This vulnerability affects the function may_open of the component ntfs3. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ntfs3: pretend $Extend records as regular files Since commit af153bb63a33 ("vfs: catch invalid modes in may_open()") requires any inode be one of S_IFDIR/S_IFLNK/S_IFREG/S_IFCHR/S_IFBLK/ S_IFIFO/S_IFSOCK type, use S_IFREG for $Extend records.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-40313 since 04/16/2025. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/23/2026).

The vulnerability scanner Nessus provides a plugin with the ID 281777 (Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2025-096 (ALASKERNEL-5.15-2025-096)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.197, 6.1.159, 6.6.117, 6.12.58 or 6.17.8 eliminates this vulnerability. Applying the patch 63eb6730ce0604d3eacf036c2f68ea70b068317c/78d46f5276ed3589aaaa435580068c5b62efc921/17249b2a65274f73ed68bcd1604e08a60fd8a278/37f65e68ba9852dc51c78dbb54a9881c3f0fe4f7/57534db1bbc4ca772393bb7d92e69d5e7b9051cf/4e8011ffec79717e5fdac43a7e79faf811a384b7 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (281777), EUVD (EUVD-2025-201632) and CERT Bund (WID-SEC-2025-2756). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • NetApp FAS
  • NetApp AFF
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Microsoft Azure Linux

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 281777
Nessus Name: Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2025-096 (ALASKERNEL-5.15-2025-096)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.15.197/6.1.159/6.6.117/6.12.58/6.17.8
Patch: 63eb6730ce0604d3eacf036c2f68ea70b068317c/78d46f5276ed3589aaaa435580068c5b62efc921/17249b2a65274f73ed68bcd1604e08a60fd8a278/37f65e68ba9852dc51c78dbb54a9881c3f0fe4f7/57534db1bbc4ca772393bb7d92e69d5e7b9051cf/4e8011ffec79717e5fdac43a7e79faf811a384b7

Timelineinfo

04/16/2025 CVE reserved
12/08/2025 +236 days Advisory disclosed
12/08/2025 +0 days VulDB entry created
02/23/2026 +77 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-40313 (🔒)
GCVE (CVE): GCVE-0-2025-40313
GCVE (VulDB): GCVE-100-334720
EUVD: 🔒
CERT Bund: WID-SEC-2025-2756 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 12/08/2025 06:20
Updated: 02/23/2026 08:31
Changes: 12/08/2025 06:20 (58), 12/20/2025 22:49 (1), 01/04/2026 15:14 (7), 01/06/2026 13:16 (2), 01/23/2026 07:50 (1), 02/23/2026 08:31 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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