CVE-2026-64128

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:

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START

ISO data PDUs carry a packet-boundary flag indicating START, CONT, END or SINGLE. The ISO_CONT branch of iso_recv() guards against a missing ISO_START by checking conn->rx_len before touching conn->rx_skb, but ISO_END does not.

If a peer sends an ISO_END as the first packet on a fresh ISO connection, conn->rx_skb is still NULL and conn->rx_len is zero, so skb_put(conn->rx_skb, ...) dereferences NULL and oopses. For BIS, where receivers sync to a broadcaster without pairing, any broadcaster on the air can trigger this.

Mirror the ISO_CONT check at the top of ISO_END so a stray end fragment is logged and dropped instead of crashing the host.

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 13, 2026

Advisory Details (6)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e3a799881c12d27596232636a607e2e3fa448d63
generic

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/84c24fb151fc1179355296d7ff29129ac7c42129
generic

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/61f2410a96dee808029e2ae4d6ef2dd635f3477f
generic

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3af41ee7ebecb0d5c8a504861f6cfad31345310f
generic

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/39f4a82e80c8f5ed2d6952d73fbafc895721a728
generic

Bluetooth: ISO: drop ISO_END frames received without prior ISO_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1c3d1e1696b72579b970e17999c503a14535205b

Vendor Advisories for CVE-2026-64128(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—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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 19× in last 7d / 81× 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 111 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64128?
CVE-2026-64128 is a medium vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: drop ISOEND frames received without prior ISOSTART ISO data PDUs carry a packet-boundary flag indicating START, CONT, END or SINGLE. The ISOCONT branch of isorecv() guards against a missing ISOSTART by checking…
When was CVE-2026-64128 disclosed?
CVE-2026-64128 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64128 actively exploited?
CVE-2026-64128 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-2026-64128?
CVE-2026-64128 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64128?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64128, 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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