CVE-2026-64000

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-19. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
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:

net: hsr: fix potential OOB access in supervision frame handling

Ensure the entire TLV header is linearized before access by adding sizeof(struct hsr_sup_tlv) to the pskb_may_pull() calls. Without this, a truncated frame could cause an out-of-bounds access.

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
40%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (6)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic

net: hsr: fix potential OOB access in supervision frame handling - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f229426072fc865654a60978bb7fda790a051ff3
generic

net: hsr: fix potential OOB access in supervision frame handling - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/78607a6854a22a2502f68092202e75a39af4865d
generic

net: hsr: fix potential OOB access in supervision frame handling - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fbd0662f9c9a66e8cc3df3099cca8ed6d3837cc7
generic

net: hsr: fix potential OOB access in supervision frame handling - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/71c986c0ba45b7dc574fae27c83e7b6671556f37
generic

net: hsr: fix potential OOB access in supervision frame handling - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a4b64f3e9c7b8259f7dd251a0313420ba7c01852
generic

net: hsr: fix potential OOB access in supervision frame handling - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/09a37dca090c55ffb1a33f52d8667f1c2367ef48

Vendor Advisories for CVE-2026-64000(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

(3 across 3 ecosystems)
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 55× in last 7d / 335× 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 406 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 UTCVendor advisory
  7. 2026-08-28 01:43 UTCGHSA enrichment
  8. 2026-08-27 21:23 UTCEG score recompute
  9. 2026-08-27 21:23 UTCVendor advisory
  10. 2026-08-27 21:23 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 11:52 UTCVendor advisory
  13. 2026-08-27 11:52 UTCGHSA enrichment
  14. 2026-08-27 02:42 UTCVendor advisory
  15. 2026-08-27 02:42 UTCGHSA enrichment
  16. 2026-08-26 22:23 UTCEG score recompute
  17. 2026-08-26 22:23 UTCVendor advisory
  18. 2026-08-26 22:23 UTCGHSA enrichment
  19. 2026-08-26 14:46 UTCEPSS rescore
  20. 2026-08-26 13:42 UTCVendor advisory
  21. 2026-08-26 13:42 UTCGHSA enrichment
  22. 2026-08-26 08:58 UTCVendor advisory
  23. 2026-08-26 08:58 UTCGHSA enrichment
  24. 2026-08-26 04:32 UTCVendor advisory
  25. 2026-08-26 04:32 UTCGHSA enrichment
Show 75 more
  1. 2026-08-25 23:45 UTCVendor advisory
  2. 2026-08-25 23:45 UTCGHSA enrichment
  3. 2026-08-25 18:48 UTCEG score recompute
  4. 2026-08-25 18:48 UTCGHSA enrichment
  5. 2026-08-25 13:49 UTCEPSS rescore
  6. 2026-08-25 12:58 UTCVendor advisory
  7. 2026-08-25 12:58 UTCGHSA enrichment
  8. 2026-08-25 08:38 UTCVendor advisory
  9. 2026-08-25 08:38 UTCGHSA enrichment
  10. 2026-08-25 03:42 UTCVendor advisory
  11. 2026-08-25 03:42 UTCGHSA enrichment
  12. 2026-08-24 23:24 UTCVendor advisory
  13. 2026-08-24 23:24 UTCGHSA enrichment
  14. 2026-08-24 19:06 UTCEG score recompute
  15. 2026-08-24 19:05 UTCGHSA enrichment
  16. 2026-08-24 12:31 UTCEG score recompute
  17. 2026-08-24 12:31 UTCVendor advisory
  18. 2026-08-24 12:31 UTCGHSA enrichment
  19. 2026-08-24 08:03 UTCVendor advisory
  20. 2026-08-24 08:03 UTCGHSA enrichment
  21. 2026-08-24 03:44 UTCVendor advisory
  22. 2026-08-24 03:43 UTCGHSA enrichment
  23. 2026-08-23 23:03 UTCVendor advisory
  24. 2026-08-23 23:03 UTCGHSA enrichment
  25. 2026-08-23 18:34 UTCVendor advisory
  26. 2026-08-23 18:34 UTCGHSA enrichment
  27. 2026-08-23 14:15 UTCVendor advisory
  28. 2026-08-23 14:15 UTCGHSA enrichment
  29. 2026-08-23 09:56 UTCVendor advisory
  30. 2026-08-23 09:56 UTCGHSA enrichment
  31. 2026-08-23 05:38 UTCVendor advisory
  32. 2026-08-23 05:38 UTCGHSA enrichment
  33. 2026-08-23 01:18 UTCEG score recompute
  34. 2026-08-23 01:18 UTCVendor advisory
  35. 2026-08-23 01:18 UTCGHSA enrichment
  36. 2026-08-23 00:19 UTCEPSS rescore
  37. 2026-08-22 21:00 UTCVendor advisory
  38. 2026-08-22 21:00 UTCGHSA enrichment
  39. 2026-08-22 16:41 UTCVendor advisory
  40. 2026-08-22 16:41 UTCGHSA enrichment
  41. 2026-08-22 12:10 UTCVendor advisory
  42. 2026-08-22 12:10 UTCGHSA enrichment
  43. 2026-08-22 07:44 UTCVendor advisory
  44. 2026-08-22 07:44 UTCGHSA enrichment
  45. 2026-08-22 03:25 UTCEG score recompute
  46. 2026-08-22 03:25 UTCVendor advisory
  47. 2026-08-22 03:25 UTCGHSA enrichment
  48. 2026-08-21 23:49 UTCEPSS rescore
  49. 2026-08-21 23:06 UTCVendor advisory
  50. 2026-08-21 23:06 UTCGHSA enrichment
  51. 2026-08-21 18:45 UTCVendor advisory
  52. 2026-08-21 18:45 UTCGHSA enrichment
  53. 2026-08-21 14:26 UTCVendor advisory
  54. 2026-08-21 14:26 UTCGHSA enrichment
  55. 2026-08-21 10:06 UTCVendor advisory
  56. 2026-08-21 10:06 UTCGHSA enrichment
  57. 2026-08-21 05:47 UTCVendor advisory
  58. 2026-08-21 05:47 UTCGHSA enrichment
  59. 2026-08-21 01:28 UTCEG score recompute
  60. 2026-08-21 01:28 UTCVendor advisory
  61. 2026-08-21 01:28 UTCGHSA enrichment
  62. 2026-08-20 22:55 UTCEPSS rescore
  63. 2026-08-20 21:10 UTCVendor advisory
  64. 2026-08-20 21:10 UTCGHSA enrichment
  65. 2026-08-20 16:51 UTCVendor advisory
  66. 2026-08-20 16:51 UTCGHSA enrichment
  67. 2026-08-20 12:14 UTCVendor advisory
  68. 2026-08-20 12:14 UTCGHSA enrichment
  69. 2026-08-20 07:54 UTCVendor advisory
  70. 2026-08-20 07:54 UTCGHSA enrichment
  71. 2026-08-20 03:35 UTCVendor advisory
  72. 2026-08-20 03:35 UTCGHSA enrichment
  73. 2026-08-19 23:03 UTCEG score recompute
  74. 2026-08-19 23:03 UTCGHSA enrichment
  75. 2026-08-19 17:04 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-64000?
CVE-2026-64000 is a critical vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: net: hsr: fix potential OOB access in supervision frame handling Ensure the entire TLV header is linearized before access by adding sizeof(struct hsrsuptlv) to the pskbmaypull() calls. Without this, a truncated frame could cause an…
When was CVE-2026-64000 disclosed?
CVE-2026-64000 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-2026-64000 actively exploited?
CVE-2026-64000 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 59.9% of all scored CVEs.
What is the CVSS score of CVE-2026-64000?
CVE-2026-64000 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-64000?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64000, 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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