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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-53252 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0622e527a31d4b44737fed5c1a2ac1fc2cfb5184 kernel.org
https://git.kernel.org/stable/c/37b3009bf5976e8ab77c8b9a9bc3bbd7ff49e37f kernel.org
https://git.kernel.org/stable/c/5b7dfca6f852e6b9d809fd0263b5427cc9fb33fd kernel.org
https://git.kernel.org/stable/c/bc2efe73c194a74839d7cf57b63880d97e21d309 kernel.org
https://git.kernel.org/stable/c/c016118b9e51eeaf5bc93850d4c455a3b583c0aa kernel.org
https://git.kernel.org/stable/c/ce4b4cac3c5749b6aa75e62e2991ae2263f2f889 kernel.org
https://git.kernel.org/stable/c/f82799407a50af7bcacacf09cc9b279af8fe9b81 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-53252
NVD Published Date:
06/25/2026
NVD Last Modified:
06/25/2026
Source:
kernel.org