CVE-2026-64515

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. the CNA's CVSS baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — Patch released this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: None knownExposed: 0

A fix is available — apply it.

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

wifi: mac80211: fix MLE defragmentation

If either reconf or EPCS multi-link element (MLE) is contained in a non-transmitted profile, the defragmentation routine is called with a pointer to the defragmented copy, but the original elements.

This is incorrect for two reasons:

  • if the original defragmentation was needed, it will not find the
correct data
  • if the original frame is at a higher address, the parsing will
potentially overrun the heap data (though given the layout of the buffers, only into the new defragmentation buffer, and then it has to stop and fail once that's filled with copied data.

Fix it by tracking the container along with the pointer and in doing so also unify the two almost identical defragmentation routines.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity83% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

wifi: mac80211: fix MLE defragmentation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a74e893f30db64cdce0fc7a96d3baa417bcd55f5
generic

wifi: mac80211: fix MLE defragmentation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/722b3f86df80644463d29fe5451e30a617f74500
generic

wifi: mac80211: fix MLE defragmentation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/55c479aae99b120489a432db9c717484e523dfd6
generic

wifi: mac80211: fix MLE defragmentation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f573e17bcb7275ddd1c8f47f46ae0faf0e902a4

Vendor Advisories for CVE-2026-64515(2)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-11ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-11ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-11ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-11ubuntu
redhatkernel-0:6.12.0-211.53.1.el10_22026-09-08redhat

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)7.0.12-1—

Additional Vendor Advisories

(4)

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 30× in last 7d / 137× 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 241 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64515?
CVE-2026-64515 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix MLE defragmentation If either reconf or EPCS multi-link element (MLE) is contained in a non-transmitted profile, the defragmentation routine is called with a pointer to the defragmented copy, but the original…
When was CVE-2026-64515 disclosed?
CVE-2026-64515 was first published in the National Vulnerability Database on July 25, 2026, 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-2026-64515 actively exploited?
CVE-2026-64515 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 85.6% of all scored CVEs.
What is the CVSS score of CVE-2026-64515?
CVE-2026-64515 has a CVSS v4.0 base score of 8.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-64515?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64515, 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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