SECUFOCUSNOW
Home›CVE index›CVE-2025-40068
Review reviewHigh

CVE-2025-40068

Linux

In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: Fix integer overflow in run_unpack() The MFT record relative to the file being opened contains its runlist, an array containing information about the file's location on the physical disk. Analysis of all Call Stack paths showed that the values of the runlist array, from which LCNs are calculated, are not validated before run_unpack function. The run_unpack function decodes the compressed runlist data format from MFT attributes (for example, $DATA), converting them into a runs_tree structure, which describes the m...

CVSS
8.4
EPSS
0.17%
6.58% percentile
CISA KEV
Not listed
Published
2025.10.28
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 8.4

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: Fix integer overflow in run_unpack() The MFT record relative to the file being opened contains its runlist, an array containing information about the file's location on the physical disk. Analysis of all Call Stack paths showed that the values of the runlist array, from which LCNs are calculated, are not validated before run_unpack function. The run_unpack function decodes the compressed runlist data format from MFT attributes (for example, $DATA), converting them into a runs_tree structure, which describes the m...

Affected product and versions

Product
Linux
Affected versions
>= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < f6b36cfd25cbadad63447c673743cf771090e756, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 3ac37e100385b59ac821a62118494442238aaac4, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < a86c8b9d03f7101e1750233846fe989df6f0d631, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 9378cfe228c2c679564a4116bcb28c8e89dff989, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 5aa5799d162ad1b8e8b699d48b6218143c695a78, >= 4342306f0f0d5ff4315a204d315c1b51b914fca5 < 736fc7bf5f68f6b74a0925b7e072c571838657d2, >= 5.15
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available