CVE-2026-64002

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon.

Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996
generic

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208

Vendor Advisories for CVE-2026-64002(1)

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-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
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 (138 versions)7.0.12-1—

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 30× in last 7d / 157× 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 205 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-64002?
CVE-2026-64002 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctllocalreservedports after unregisternetsysctltable() ipv4sysctlexitnet() is currently freeing net->ipv4.sysctllocalreservedports too soon. Only after unregisternetsysctl_table() we can be sure no threads…
When was CVE-2026-64002 disclosed?
CVE-2026-64002 was first published in the National Vulnerability Database on July 19, 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-2026-64002 actively exploited?
CVE-2026-64002 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-64002?
CVE-2026-64002 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-64002?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64002, 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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