CVE-2023-53145: Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition
First published: Sat May 10 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition In btsdio_probe, the data->work is bound with btsdio_work. It will be started in btsdio_send_frame. If the btsdio_remove runs with a unfinished work, there may be a race condition that hdev is freed but used in btsdio_work. Fix it by canceling the work before do cleanup in btsdio_remove.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel |
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Reference Links
- https://git.kernel.org/stable/c/6c3653627397a0d6eab19b20a59423e118985a6b
- https://git.kernel.org/stable/c/3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e
- https://git.kernel.org/stable/c/a6650d27ab2c12a8ee750f396edb5ac8b4558b2e
- https://git.kernel.org/stable/c/746b363bef41cc159c051c47f9e30800bc6b520d
- https://git.kernel.org/stable/c/a5c2a467e9e789ae0891de55b766daac52e3b7b3
- https://git.kernel.org/stable/c/179c65828593aff1f444e15debd40a477cb23cf4
- https://git.kernel.org/stable/c/73f7b171b7c09139eb3c6a5677c200dc1be5f318
Frequently Asked Questions
What is the severity of CVE-2023-53145?
CVE-2023-53145 is classified as a medium severity vulnerability due to its potential impact on system stability.
How do I fix CVE-2023-53145?
To fix CVE-2023-53145, you should update to the latest version of the Linux kernel where the vulnerability has been addressed.
What component is affected by CVE-2023-53145?
CVE-2023-53145 affects the Bluetooth subsystem in the Linux kernel.
What type of vulnerability is CVE-2023-53145?
CVE-2023-53145 is a use-after-free vulnerability caused by a race condition in the Bluetooth btsdio module.
What are the potential consequences of CVE-2023-53145?
Exploitation of CVE-2023-53145 could lead to crashes or arbitrary code execution in affected systems.
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