CVEvulnerability
CVE-2025-39973
8.8 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2025-10-15
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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.
References
- https://git.kernel.org/stable/c/0543d40d6513cdf1c7882811086e59a6455dfe97 git.kernel.org
- https://git.kernel.org/stable/c/05fe81fb9db20464fa532a3835dc8300d68a2f84 git.kernel.org
- https://git.kernel.org/stable/c/45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985 git.kernel.org
- https://git.kernel.org/stable/c/55d225670def06b01af2e7a5e0446fbe946289e8 git.kernel.org
- https://git.kernel.org/stable/c/7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9 git.kernel.org
- https://git.kernel.org/stable/c/afec12adab55d10708179a64d95d650741e60fe0 git.kernel.org
- https://git.kernel.org/stable/c/c0c83f4cd074b75cecef107bfc349be7d516c9c4 git.kernel.org
- https://git.kernel.org/stable/c/d3b0d3f8d11fa957171fbb186e53998361a88d4e git.kernel.org