CVE-2025-40075

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2025-10-28. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 5 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

tcp_metrics: use dst_dev_net_rcu()

Replace three dst_dev() with a lockdep enabled helper.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

October 28, 2025

Last Modified

August 5, 2026

Advisory Details (3)

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

tcp_metrics: use dst_dev_net_rcu() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/50c127a69cd6285300931853b352a1918cfa180f
generic

tcp_metrics: use dst_dev_net_rcu() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4b89397807eb04986427c4786d065e9442834ad4
generic

tcp_metrics: use dst_dev_net_rcu() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/07613a95326ebad2d1b88d883cd72546025a4f3e

Vendor Advisories for CVE-2025-40075(1)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-14.14) @ questing2026-05-21ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1011.11) @ noble2026-05-21ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1007.7) @ questing2026-05-21ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1008.8) @ questing2026-05-21ubuntu
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1007.7) @ questing2026-05-21ubuntu
linuxKernel @ 6.12.63—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.

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 45× 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 140 total refreshes for this CVE.

  1. 2026-08-05 12:53 UTCEG score recompute
  2. 2026-08-05 12:53 UTCVendor advisory
  3. 2026-08-05 12:53 UTCGHSA enrichment
  4. 2026-08-04 15:09 UTCEPSS rescore
  5. 2026-08-04 10:37 UTCEPSS rescore
  6. 2026-08-03 10:35 UTCEPSS rescore
  7. 2026-08-02 02:26 UTCEPSS rescore
  8. 2026-08-01 04:15 UTCEPSS rescore
  9. 2026-07-30 16:27 UTCEPSS rescore
  10. 2026-07-30 06:29 UTCEG score recompute▲ 8.10
  11. 2026-07-30 06:29 UTCGHSA enrichment
  12. 2026-07-30 06:18 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  13. 2026-07-30 01:29 UTCEPSS rescore
  14. 2026-07-28 15:35 UTCEPSS rescore
  15. 2026-07-27 08:39 UTCOSV refresh
  16. 2026-07-26 14:54 UTCEPSS rescore
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  20. 2026-07-23 02:55 UTCEG score recompute
  21. 2026-07-22 14:07 UTCEPSS rescore
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  15. 2026-07-11 08:27 UTCEPSS rescore
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  17. 2026-07-10 03:23 UTCOSV refresh
  18. 2026-07-09 19:09 UTCEPSS rescore
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  20. 2026-07-07 13:45 UTCEPSS rescore
  21. 2026-07-06 16:27 UTCEPSS rescore
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  23. 2026-07-05 02:30 UTCEPSS rescore
  24. 2026-07-04 06:30 UTCEPSS rescore
  25. 2026-07-01 15:06 UTCEPSS rescore
  26. 2026-07-01 15:06 UTCEPSS rescore
  27. 2026-06-30 23:22 UTCEPSS rescore
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  41. 2026-06-23 21:32 UTCEPSS rescore
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  45. 2026-06-21 14:56 UTCEPSS rescore
  46. 2026-06-21 14:56 UTCEPSS rescore
  47. 2026-06-21 13:31 UTCOSV refresh
  48. 2026-06-21 01:59 UTCEPSS rescore
  49. 2026-06-21 01:59 UTCEPSS rescore
  50. 2026-06-19 19:25 UTCEPSS rescore
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  52. 2026-06-18 17:52 UTCEPSS rescore
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  75. 2026-06-02 08:09 UTCOSV refresh

Frequently asked(5)

What is CVE-2025-40075?
CVE-2025-40075 is a high vulnerability published on October 28, 2025. In the Linux kernel, the following vulnerability has been resolved: tcpmetrics: use dstdevnetrcu() Replace three dst_dev() with a lockdep enabled helper.
When was CVE-2025-40075 disclosed?
CVE-2025-40075 was first published in the National Vulnerability Database on October 28, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40075 actively exploited?
CVE-2025-40075 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 69.3% of all scored CVEs.
What is the CVSS score of CVE-2025-40075?
CVE-2025-40075 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2025-40075?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40075, 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

Explore the affected products and dependency analysis for CVE-2025-40075

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