i40e: add validation for ring_len param

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2025-39973 · Microsoft / collected KEV context

cve-program · CVE-2025-39973

• https://git.kernel.org/stable/c/0543d40d6513cdf1c7882811086e59a6455dfe97
• https://git.kernel.org/stable/c/7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9
• https://git.kernel.org/stable/c/45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985
• https://git.kernel.org/stable/c/d3b0d3f8d11fa957171fbb186e53998361a88d4e
• https://git.kernel.org/stable/c/c0c83f4cd074b75cecef107bfc349be7d516c9c4
• https://git.kernel.org/stable/c/05fe81fb9db20464fa532a3835dc8300d68a2f84
• https://git.kernel.org/stable/c/afec12adab55d10708179a64d95d650741e60fe0
• https://git.kernel.org/stable/c/55d225670def06b01af2e7a5e0446fbe946289e8

No related operational record is retained in the current change model.