CVE-2025-53477: Apache NimBLE: NULL Pointer Dereference in NimBLE host HCI layer

[Szymon Janc <janc () apache org>]

Severity: low 

Affected versions:

- Apache NimBLE through 1.8.0

Description:

NULL Pointer Dereference vulnerability in Apache Nimble.

Missing validation of HCI connection complete or HCI command TX buffer could lead to NULL pointer dereference.
This issue requires disabled asserts and broken or bogus Bluetooth controller and thus severity is considered low.

This issue affects Apache NimBLE: through 1.8.0.

Users are recommended to upgrade to version 1.9.0, which fixes the issue.

Credit:

雷重庆 <leicq () seu edu cn> (reporter)

References:

https://github.com/apache/mynewt-nimble/commit/0caf9baeb271ede85fcc5237ab87ddbf938600da
https://github.com/apache/mynewt-nimble/commit/3160b8c4c7ff8db4e0f9badcdf7df684b151e077
https://mynewt.apache.org/
https://www.cve.org/CVERecord?id=CVE-2025-53477