CVE-2026-64410

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-25. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

netfilter: flowtable: IPIP tunnel hardware offload is not yet support

No driver supports for IPIP tunnels yet, give up early on setting up the hardware offload for this scenario.

This patch adds a stub that can be enhanced to add more configuration that are currently not supported. As of now, the offload work is enqueued to the worker, then ignored if the hardware offload configuration is not supported.

Check the NF_FLOW_HW flag to know if this entry was already tried once to be offloaded so this is not retried on refresh when unsupported. Move NF_FLOW_HW flag check to nf_flow_offload_add(). If this NF_FLOW_HW flag is unset the _del and _stats variants are never called.

This can be updated later on to skip hardware offload work to be queued in case hardware offload does not support it.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

July 25, 2026

Last Modified

September 4, 2026

Advisory Details (2)

Auto-updated Sep 11, 2026
No patch confirmed yet.
generic

netfilter: flowtable: IPIP tunnel hardware offload is not yet support - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9efe838c13133acb70c78d04c49e8362fe533566
generic

netfilter: flowtable: IPIP tunnel hardware offload is not yet support - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c5dcab95f4cd42a1648739ec9300fbb4b1a021f

Vendor Advisories for CVE-2026-64410(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-15ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-31.31~24.04.1) @ noble2026-09-15ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-15ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-15ubuntu

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.

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

All Vendor Advisories

(4)

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 54× in last 7d / 177× 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 356 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-64410?
CVE-2026-64410 is a critical vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: IPIP tunnel hardware offload is not yet support No driver supports for IPIP tunnels yet, give up early on setting up the hardware offload for this scenario. This patch adds a stub that can be enhanced to add…
When was CVE-2026-64410 disclosed?
CVE-2026-64410 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on September 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64410 actively exploited?
CVE-2026-64410 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 68.6% of all scored CVEs.
What is the CVSS score of CVE-2026-64410?
CVE-2026-64410 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-64410?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64410, 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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