CVE-2026-64090

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-19. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

batman-adv: tt: avoid empty VLAN responses

The commit 16116dac2339 ("batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs") added checks to the local (direct) TT response code. But the response can also be done indirectly by another node using the global TT state. To avoid such inconsistency states reported in the original fix, also avoid sending empty VLANs for replies from the global TT state.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 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 11, 2026

Advisory Details (8)

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

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fa1bd704940b5bcbc32c0b28db9167405c8ee5e0
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea4f757641430bcc8322772e161453c4db5ecb64
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cfb30645280a2131e46cbd1b9a38cfd3ff893f12
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b93ca6012712ecab2b551e120d7c95038d6a89e5
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ab26e346322648f5c39de017d9723c9256284fce
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a02c8fc963ddeecb5d8788be0740c1869fc54b7
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/99f17d1cdb371cbd037975239b321f346d38f6d2
generic

batman-adv: tt: avoid empty VLAN responses - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f467d9a095211d3f77e8ff1bee90e73ffe01c64

Vendor Advisories for CVE-2026-64090(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-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
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ 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 20× in last 7d / 86× 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 116 total refreshes for this CVE.

  1. 2026-08-30 02:47 UTCEG score recompute
  2. 2026-08-30 02:47 UTCVendor advisory
  3. 2026-08-30 02:47 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-27 21:22 UTCEG score recompute
  7. 2026-08-27 21:22 UTCVendor advisory
  8. 2026-08-27 21:22 UTCGHSA enrichment
  9. 2026-08-26 22:15 UTCVendor advisory
  10. 2026-08-26 22:15 UTCGHSA enrichment
  11. 2026-08-25 18:46 UTCEG score recompute
  12. 2026-08-25 18:46 UTCVendor advisory
  13. 2026-08-25 18:46 UTCGHSA enrichment
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 19:03 UTCEG score recompute
  16. 2026-08-24 19:03 UTCVendor advisory
  17. 2026-08-24 19:03 UTCGHSA enrichment
  18. 2026-08-23 20:13 UTCEG score recompute
  19. 2026-08-23 20:13 UTCVendor advisory
  20. 2026-08-23 20:13 UTCGHSA enrichment
  21. 2026-08-23 00:19 UTCEPSS rescore
  22. 2026-08-22 21:46 UTCEG score recompute
  23. 2026-08-22 21:46 UTCVendor advisory
  24. 2026-08-22 21:46 UTCGHSA enrichment
  25. 2026-08-21 23:49 UTCEPSS rescore
Show 75 more
  1. 2026-08-21 23:19 UTCVendor advisory
  2. 2026-08-21 23:19 UTCGHSA enrichment
  3. 2026-08-21 00:46 UTCEG score recompute
  4. 2026-08-21 00:46 UTCVendor advisory
  5. 2026-08-21 00:45 UTCGHSA enrichment
  6. 2026-08-20 22:55 UTCEPSS rescore
  7. 2026-08-20 02:19 UTCEG score recompute
  8. 2026-08-20 02:19 UTCVendor advisory
  9. 2026-08-20 02:19 UTCGHSA enrichment
  10. 2026-08-19 17:04 UTCEPSS rescore
  11. 2026-08-19 03:52 UTCEG score recompute
  12. 2026-08-19 03:52 UTCVendor advisory
  13. 2026-08-19 03:51 UTCGHSA enrichment
  14. 2026-08-18 13:48 UTCEPSS rescore
  15. 2026-08-18 05:08 UTCEG score recompute
  16. 2026-08-18 05:08 UTCVendor advisory
  17. 2026-08-18 05:08 UTCGHSA enrichment
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 06:38 UTCEG score recompute
  20. 2026-08-17 06:38 UTCVendor advisory
  21. 2026-08-17 06:38 UTCGHSA enrichment
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 08:11 UTCEG score recompute
  24. 2026-08-16 08:11 UTCVendor advisory
  25. 2026-08-16 08:11 UTCGHSA enrichment
  26. 2026-08-15 09:44 UTCEG score recompute
  27. 2026-08-15 09:44 UTCVendor advisory
  28. 2026-08-15 09:44 UTCGHSA enrichment
  29. 2026-08-15 01:30 UTCEPSS rescore
  30. 2026-08-14 11:17 UTCEG score recompute
  31. 2026-08-14 11:17 UTCVendor advisory
  32. 2026-08-14 11:17 UTCGHSA enrichment
  33. 2026-08-13 22:00 UTCEPSS rescore
  34. 2026-08-13 12:49 UTCVendor advisory
  35. 2026-08-13 12:49 UTCGHSA enrichment
  36. 2026-08-12 14:22 UTCEG score recompute
  37. 2026-08-12 14:22 UTCVendor advisory
  38. 2026-08-12 14:22 UTCGHSA enrichment
  39. 2026-08-12 13:51 UTCEPSS rescore
  40. 2026-08-11 15:55 UTCEG score recompute▲ 5.50
  41. 2026-08-11 15:55 UTCVendor advisory
  42. 2026-08-11 15:55 UTCGHSA enrichment
  43. 2026-08-11 15:55 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  44. 2026-08-11 00:00 UTCEPSS rescore
  45. 2026-08-10 20:28 UTCVendor advisory
  46. 2026-08-10 20:28 UTCGHSA enrichment
  47. 2026-08-09 13:47 UTCEPSS rescore
  48. 2026-08-08 16:37 UTCEPSS rescore
  49. 2026-08-08 01:16 UTCVendor advisory
  50. 2026-08-08 01:16 UTCGHSA enrichment
  51. 2026-08-06 13:47 UTCEPSS rescore
  52. 2026-08-05 19:17 UTCEPSS rescore
  53. 2026-08-05 19:17 UTCEPSS rescore
  54. 2026-08-05 06:04 UTCGHSA enrichment
  55. 2026-08-04 15:10 UTCEPSS rescore
  56. 2026-08-04 10:39 UTCEPSS rescore
  57. 2026-08-03 10:36 UTCEPSS rescore
  58. 2026-08-02 10:39 UTCVendor advisory
  59. 2026-08-02 10:39 UTCGHSA enrichment
  60. 2026-08-02 02:27 UTCEPSS rescore
  61. 2026-08-01 04:16 UTCEPSS rescore
  62. 2026-07-30 16:28 UTCEPSS rescore
  63. 2026-07-30 15:26 UTCEG score recompute
  64. 2026-07-30 15:26 UTCGHSA enrichment
  65. 2026-07-30 01:30 UTCEPSS rescore
  66. 2026-07-30 01:30 UTCEPSS rescore
  67. 2026-07-29 06:07 UTCGHSA enrichment
  68. 2026-07-28 15:37 UTCEPSS rescore
  69. 2026-07-27 14:14 UTCEPSS rescore
  70. 2026-07-26 14:54 UTCEPSS rescore
  71. 2026-07-26 14:54 UTCEPSS rescore
  72. 2026-07-26 10:53 UTCEG score recompute
  73. 2026-07-26 10:53 UTCVendor advisory
  74. 2026-07-26 10:53 UTCGHSA enrichment
  75. 2026-07-25 14:18 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-64090?
CVE-2026-64090 is a medium vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid empty VLAN responses The commit 16116dac2339 ("batman-adv: prevent TT request storms by not sending inconsistent TT TLVLs") added checks to the local (direct) TT response code. But the response can also be…
When was CVE-2026-64090 disclosed?
CVE-2026-64090 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64090 actively exploited?
CVE-2026-64090 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 97.3% of all scored CVEs.
What is the CVSS score of CVE-2026-64090?
CVE-2026-64090 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64090?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64090, 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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