CVE-2026-53252

NONEPre-NVD 0.0Trending — 3 sources updated this week
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 0%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

Bluetooth: fix memory leak in error path of hci_alloc_dev()

Early failures in Bluetooth HCI UART configuration leak SRCU percpu memory.

When device initialization fails before hci_register_dev() completes, the HCI_UNREGISTER flag is never set. As a result, when the device reference count reaches zero, bt_host_release() evaluates this flag as false and falls back to a direct kfree(hdev).

Because hci_release_dev() is bypassed, the SRCU struct initialized early in hci_alloc_dev() is never cleaned up, resulting in a leak of percpu memory.

Fix the leak by explicitly calling cleanup_srcu_struct() in the fallback (unregistered) branch of bt_host_release() before freeing the device.

CVSS v3
—
EG Score
0.0(none)
EPSS
8.7%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 30, 2026

References (7)

Vendor Advisories for CVE-2026-53252(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 27× 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.

  1. 2026-07-06 18:17 UTCVendor advisory
  2. 2026-07-06 18:16 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-03 22:14 UTCVendor advisory
  12. 2026-07-03 22:14 UTCGHSA enrichment
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-07-01 02:12 UTCVendor advisory
  15. 2026-07-01 02:12 UTCGHSA enrichment
  16. 2026-06-30 23:22 UTCEPSS rescore
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 06:09 UTCEG score recompute
  21. 2026-06-28 06:09 UTCGHSA enrichment
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 2 more
  1. 2026-06-25 10:05 UTCEG score recompute
  2. 2026-06-25 10:04 UTCGHSA enrichment

Frequently asked(4)

What is CVE-2026-53252?
CVE-2026-53252 is a none vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix memory leak in error path of hciallocdev() Early failures in Bluetooth HCI UART configuration leak SRCU percpu memory. When device initialization fails before hciregisterdev() completes, the HCI_UNREGISTER flag is…
When was CVE-2026-53252 disclosed?
CVE-2026-53252 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53252 actively exploited?
CVE-2026-53252 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2026-53252?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53252, 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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