CVE-2025-21660 Vulnerability Analysis & Exploit Details

CVE-2025-21660
Vulnerability Scoring

5.5
/10
Significant Risk

Security assessments indicate that CVE-2025-21660 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2025-21660 Details

Status: Analyzed

Last updated: 🕜 15 Oct 2025, 13:47 UTC
Originally published on: 🕐 21 Jan 2025, 13:15 UTC

Time between publication and last update: 267 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2025-21660 Vulnerability Summary

CVE-2025-21660: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked When `ksmbd_vfs_kern_path_locked` met an error and it is not the last entry, it will exit without restoring changed path buffer. But later this buffer may be used as the filename for creation.

Assessing the Risk of CVE-2025-21660

Access Complexity Graph

The exploitability of CVE-2025-21660 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2025-21660

CVE-2025-21660 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2025-21660, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2025-21660, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2025-21660 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2025-21660 poses no threat to data integrity.
  • Availability: High
    CVE-2025-21660 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.045% (probability of exploit)

EPSS Percentile: 18.4% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 81.6% of others.

CVE-2025-21660 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:o:linux:linux_kernel:6.1.113:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.113:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.114:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.114:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.115:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.115:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.116:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.116:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.117:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.117:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.118:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.118:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.119:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.119:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.120:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.120:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.121:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.121:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.122:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.122:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.123:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.123:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.1.124:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.1.124:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.54:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.54:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.55:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.55:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.56:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.56:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.57:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.57:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.58:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.58:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.59:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.59:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.60:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.60:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.61:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.61:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.62:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.62:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.63:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.63:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.64:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.64:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.65:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.65:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.66:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.66:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.67:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.67:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.68:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.68:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.69:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.69:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.70:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.70:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.6.71:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.6.71:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10.13:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10.13:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10.14:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10.14:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.10:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.10:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.10:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.10:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11.11:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11.11:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.11:rc8:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.11:rc8:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12:-:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12:-:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.1:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.1:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.2:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.2:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.3:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.3:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.4:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.4:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.5:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.5:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.6:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.6:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.7:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.7:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.8:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.8:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.12.9:*:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.12.9:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*
    cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*

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