In the Linux kernel, the following vulnerability has been resolved: i40e: add validation for ring_len param The `ring_len` parameter provided by the virtual function (VF) is assigned directly to the hardware memory context (HMC) without any validation. To address this, introduce an upper boundary check for both Tx and Rx queue lengths. The maximum number of descriptors supported by the hardware is 8k-32. Additionally, enforce alignment constraints: Tx rings must be a multiple of 8, and Rx rings must be a multiple of 32.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/0543d40d6513cdf1c7882811086e59a6455dfe97 cve-icon cve-icon
https://git.kernel.org/stable/c/05fe81fb9db20464fa532a3835dc8300d68a2f84 cve-icon cve-icon
https://git.kernel.org/stable/c/45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985 cve-icon cve-icon
https://git.kernel.org/stable/c/55d225670def06b01af2e7a5e0446fbe946289e8 cve-icon cve-icon
https://git.kernel.org/stable/c/7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9 cve-icon cve-icon
https://git.kernel.org/stable/c/afec12adab55d10708179a64d95d650741e60fe0 cve-icon cve-icon
https://git.kernel.org/stable/c/c0c83f4cd074b75cecef107bfc349be7d516c9c4 cve-icon cve-icon
https://git.kernel.org/stable/c/d3b0d3f8d11fa957171fbb186e53998361a88d4e cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025101557-CVE-2025-39973-b1a3@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-39973 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-39973 cve-icon
History

Mon, 20 Oct 2025 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 16 Oct 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Wed, 15 Oct 2025 08:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: i40e: add validation for ring_len param The `ring_len` parameter provided by the virtual function (VF) is assigned directly to the hardware memory context (HMC) without any validation. To address this, introduce an upper boundary check for both Tx and Rx queue lengths. The maximum number of descriptors supported by the hardware is 8k-32. Additionally, enforce alignment constraints: Tx rings must be a multiple of 8, and Rx rings must be a multiple of 32.
Title i40e: add validation for ring_len param
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-10-15T07:55:55.590Z

Updated: 2025-10-15T07:55:55.590Z

Reserved: 2025-04-16T07:20:57.149Z

Link: CVE-2025-39973

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-15T08:15:35.007

Modified: 2025-10-16T15:29:11.563

Link: CVE-2025-39973

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-15T00:00:00Z

Links: CVE-2025-39973 - Bugzilla