CVE-2025-39973

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 90% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 6 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

October 15, 2025

Last Modified

July 30, 2026

Advisory Details (8)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d3b0d3f8d11fa957171fbb186e53998361a88d4e
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c0c83f4cd074b75cecef107bfc349be7d516c9c4
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/afec12adab55d10708179a64d95d650741e60fe0
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7d749e38dd2b7e8a80da2ca30c93e09de95bfcf9
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/55d225670def06b01af2e7a5e0446fbe946289e8
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/45a7527cd7da4cdcf3b06b5c0cb1cae30b5a5985
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/05fe81fb9db20464fa532a3835dc8300d68a2f84
generic

i40e: add validation for ring_len param - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0543d40d6513cdf1c7882811086e59a6455dfe97

Vendor Advisories for CVE-2025-39973(11)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-edge (6.8.0-1051.57~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1109.94) @ jammy2026-07-30ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1097.95) @ jammy2026-07-30ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1050.53~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1052.58+fips1) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1109.107) @ jammy2026-07-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-106.106) @ noble2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1029.30) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.170.159) @ jammy2026-07-30ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1045.46~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1049.52.1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1052.55+fips1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1100.90) @ jammy2026-07-30ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1099.103) @ jammy2026-07-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1052.52) @ jammy2026-07-30ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1100.107~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1097.93) @ jammy2026-07-30ubuntu
redhatkernel-rt-0:3.10.0-1160.146.1.rt56.1298.el72026-02-02redhat
redhatkernel-0:3.10.0-1160.146.1.el72026-01-29redhat
redhatkernel-0:4.18.0-477.126.1.el8_82026-01-28redhat
redhatkernel-0:4.18.0-193.181.1.el8_22026-01-15redhat
redhatkernel-0:4.18.0-372.175.1.el8_62026-01-14redhat
redhatkernel-0:5.14.0-427.104.1.el9_42026-01-07redhat
redhatkernel-0:6.12.0-55.47.1.el10_02025-12-02redhat
redhatkernel-0:6.12.0-124.16.1.el10_12025-12-01redhat
redhatkernel-0:4.18.0-553.85.1.el8_102025-11-24redhat
redhatkernel-rt-0:4.18.0-553.85.1.rt7.426.el8_102025-11-24redhat
redhatkernel-0:5.14.0-570.66.1.el9_62025-11-24redhat
redhatkernel-0:5.14.0-611.8.1.el9_72025-11-17redhat
linuxKernel @ 5.4.300—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(15)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 134 total refreshes for this CVE.

  1. 2026-08-01 04:15 UTCEPSS rescore
  2. 2026-07-30 16:27 UTCEPSS rescore
  3. 2026-07-30 06:31 UTCEG score recompute▲ 8.80
  4. 2026-07-30 06:31 UTCVendor advisory
  5. 2026-07-30 06:31 UTCGHSA enrichment
  6. 2026-07-30 06:18 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  7. 2026-07-30 01:29 UTCEPSS rescore
  8. 2026-07-28 15:35 UTCEPSS rescore
  9. 2026-07-27 09:39 UTCOSV refresh
  10. 2026-07-26 14:54 UTCEPSS rescore
  11. 2026-07-25 14:17 UTCEPSS rescore
  12. 2026-07-25 14:17 UTCEPSS rescore
  13. 2026-07-24 14:17 UTCEPSS rescore
  14. 2026-07-23 02:55 UTCEG score recompute
  15. 2026-07-22 14:07 UTCEPSS rescore
  16. 2026-07-22 14:07 UTCEPSS rescore
  17. 2026-07-21 15:24 UTCEPSS rescore
  18. 2026-07-20 17:07 UTCEPSS rescore
  19. 2026-07-19 14:30 UTCEPSS rescore
  20. 2026-07-19 14:30 UTCEPSS rescore
  21. 2026-07-19 02:28 UTCEPSS rescore
  22. 2026-07-19 02:28 UTCEPSS rescore
  23. 2026-07-18 10:04 UTCEPSS rescore
  24. 2026-07-18 10:04 UTCEPSS rescore
  25. 2026-07-16 17:02 UTCEPSS rescore
Show 75 more
  1. 2026-07-15 01:59 UTCEPSS rescore
  2. 2026-07-15 01:59 UTCEPSS rescore
  3. 2026-07-13 22:29 UTCEPSS rescore
  4. 2026-07-13 22:29 UTCEPSS rescore
  5. 2026-07-13 06:12 UTCEPSS rescore
  6. 2026-07-12 05:46 UTCEPSS rescore
  7. 2026-07-11 08:27 UTCEPSS rescore
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-10 04:24 UTCOSV refresh
  10. 2026-07-09 19:09 UTCEPSS rescore
  11. 2026-07-09 19:09 UTCEPSS rescore
  12. 2026-07-07 13:45 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 06:30 UTCEPSS rescore
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 15:06 UTCEPSS rescore
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 23:22 UTCEPSS rescore
  22. 2026-06-29 14:06 UTCEPSS rescore
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-28 14:07 UTCEPSS rescore
  25. 2026-06-28 14:07 UTCEPSS rescore
  26. 2026-06-28 04:55 UTCEPSS rescore
  27. 2026-06-28 04:55 UTCEPSS rescore
  28. 2026-06-27 03:08 UTCEPSS rescore
  29. 2026-06-27 03:08 UTCEPSS rescore
  30. 2026-06-25 13:49 UTCEPSS rescore
  31. 2026-06-25 13:49 UTCEPSS rescore
  32. 2026-06-24 14:04 UTCEPSS rescore
  33. 2026-06-24 14:04 UTCEPSS rescore
  34. 2026-06-23 21:32 UTCEPSS rescore
  35. 2026-06-23 21:32 UTCEPSS rescore
  36. 2026-06-22 14:25 UTCEPSS rescore
  37. 2026-06-22 14:25 UTCEPSS rescore
  38. 2026-06-21 14:56 UTCEPSS rescore
  39. 2026-06-21 14:56 UTCEPSS rescore
  40. 2026-06-21 14:52 UTCOSV refresh
  41. 2026-06-21 01:59 UTCEPSS rescore
  42. 2026-06-21 01:59 UTCEPSS rescore
  43. 2026-06-19 19:25 UTCEPSS rescore
  44. 2026-06-19 19:25 UTCEPSS rescore
  45. 2026-06-18 17:52 UTCEPSS rescore
  46. 2026-06-18 17:52 UTCEPSS rescore
  47. 2026-06-17 17:52 UTCEPSS rescore
  48. 2026-06-16 17:52 UTCEPSS rescore
  49. 2026-06-16 17:52 UTCEPSS rescore
  50. 2026-06-14 23:17 UTCEPSS rescore
  51. 2026-06-13 23:00 UTCEPSS rescore
  52. 2026-06-12 23:11 UTCEPSS rescore
  53. 2026-06-11 14:00 UTCEPSS rescore
  54. 2026-06-10 22:18 UTCEPSS rescore
  55. 2026-06-10 13:22 UTCEPSS rescore
  56. 2026-06-08 14:16 UTCEPSS rescore
  57. 2026-06-08 14:16 UTCEPSS rescore
  58. 2026-06-07 15:24 UTCEPSS rescore
  59. 2026-06-06 13:47 UTCEPSS rescore
  60. 2026-06-06 13:47 UTCEPSS rescore
  61. 2026-06-05 22:46 UTCEPSS rescore
  62. 2026-06-05 22:46 UTCEPSS rescore
  63. 2026-06-05 06:10 UTCEPSS rescore
  64. 2026-06-05 06:10 UTCEPSS rescore
  65. 2026-06-04 13:12 UTCEPSS rescore
  66. 2026-06-04 13:12 UTCEPSS rescore
  67. 2026-06-02 20:12 UTCEPSS rescore
  68. 2026-06-02 11:09 UTCOSV refresh
  69. 2026-06-01 13:51 UTCEPSS rescore
  70. 2026-06-01 13:51 UTCEPSS rescore
  71. 2026-05-31 22:30 UTCEPSS rescore
  72. 2026-05-31 22:30 UTCEPSS rescore
  73. 2026-05-31 00:16 UTCEPSS rescore
  74. 2026-05-29 13:44 UTCEPSS rescore
  75. 2026-05-28 13:44 UTCEPSS rescore

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2025-39973?
CVE-2025-39973 is a high vulnerability published on October 15, 2025. 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…
When was CVE-2025-39973 disclosed?
CVE-2025-39973 was first published in the National Vulnerability Database on October 15, 2025, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-39973 actively exploited?
CVE-2025-39973 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 95.8% of all scored CVEs.
What is the CVSS score of CVE-2025-39973?
CVE-2025-39973 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2025-39973?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-39973, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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