SECUFOCUSNOW
Home›CVE index›CVE-2025-68736
Review reviewHigh

CVE-2025-68736

Linux

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix handling of disconnected directories Disconnected files or directories can appear when they are visible and opened from a bind mount, but have been renamed or moved from the source of the bind mount in a way that makes them inaccessible from the mount point (i.e. out of scope). Previously, access rights tied to files or directories opened through a disconnected directory were collected by walking the related hierarchy down to the root of the filesystem, without taking into account the mount point because it co...

CVSS
8.8
EPSS
0.12%
2.56% percentile
CISA KEV
Not listed
Published
2025.12.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.12%
Technical severityCVSS 8.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix handling of disconnected directories Disconnected files or directories can appear when they are visible and opened from a bind mount, but have been renamed or moved from the source of the bind mount in a way that makes them inaccessible from the mount point (i.e. out of scope). Previously, access rights tied to files or directories opened through a disconnected directory were collected by walking the related hierarchy down to the root of the filesystem, without taking into account the mount point because it co...

Affected product and versions

Product
Linux
Affected versions
>= cb2c7d1a1776057c9a1f48ed1250d85e94d4850d < fbf718d5afe21057694a0c0223a18b0c7a5960b6, >= cb2c7d1a1776057c9a1f48ed1250d85e94d4850d < 426d5b681b2f3339ff04da39b81d71176dc8c87c, >= cb2c7d1a1776057c9a1f48ed1250d85e94d4850d < cadb28f8b3fd6908e3051e86158c65c3a8e1c907, >= cb2c7d1a1776057c9a1f48ed1250d85e94d4850d < 49c9e09d961025b22e61ef9ad56aa1c21b6ce2f1, >= 5.13
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:L/UI:N/S:C/C:H/I:H/A:H
CWE
Not available