CVE-2026-53364

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-13. 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: hci_conn: Fix memory leak in hci_le_big_terminate()

hci_le_big_terminate() allocates iso_list_data via kzalloc_obj but returns 0 without freeing it when neither pa_sync_term nor big_sync_term flags are set after evaluating the PA and BIG sync connection state.

This early-return path was introduced when hci_le_big_terminate() was refactored to take struct hci_conn instead of raw u8 parameters, adding PA/BIG flag evaluation logic. The existing kfree() on hci_cmd_sync_queue failure does not cover this path.

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 13, 2026

Last Modified

August 3, 2026

Advisory Details (3)

Auto-updated Jul 22, 2026
No patch confirmed yet.
generic

Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e6b78019664dfe37c3dc707f50e7b453d6c7726d
generic

Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bfa9d28960ed677d556bdf097073bc3129686229
generic

Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a59d4f4217e6200ca9180643e5738a87d3fa8be0

Vendor Advisories for CVE-2026-53364(1)

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

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-30ubuntu
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

(1 across 1 ecosystem)
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

(8)

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 23× in last 7d / 106× 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 140 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53364?
CVE-2026-53364 is a medium vulnerability published on July 13, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciconn: Fix memory leak in hcilebigterminate() hcilebigterminate() allocates isolistdata via kzallocobj but returns 0 without freeing it when neither pasyncterm nor bigsyncterm flags are set after evaluating the PA and…
When was CVE-2026-53364 disclosed?
CVE-2026-53364 was first published in the National Vulnerability Database on July 13, 2026, with the most recent update on August 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53364 actively exploited?
CVE-2026-53364 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 97.5% of all scored CVEs.
What is the CVSS score of CVE-2026-53364?
CVE-2026-53364 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53364?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53364, 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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