Improper error handling in Linux kernel - CVE-2025-40040

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Main Vulnerability Database Vulnerabilities #VU117752

Improper error handling in Linux kernel - CVE-2025-40040

Published: October 28, 2025 / Updated: January 4, 2026


Vulnerability identifier: #VU117752
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2025-40040
CWE-ID: CWE-388
Exploitation vector: Local access
Exploit availability: Public exploit is available
Vendor: Linux Foundation
Affected software:
Linux kernel

Detailed vulnerability description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper error handling within the rust/bindings/bindings_helper.h. A local user can perform a denial of service (DoS) attack.


How to mitigate CVE-2025-40040

Install update from vendor's repository.

Sources