Bluetooth Crash Vulnerability in Linux Package: CVE-2023-53520
Summary
DEBIAN-CVE-2023-53520: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier may still be accessing it, it can cause... Affects linux versions 5.10.103-1 – 6.9.9-1. No fix is published. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing hardware and system resources. It supports various hardware interfaces, including Bluetooth, which allows devices to communicate wirelessly. The package is critical for system stability and performance, making it vital for users and developers alike. This specific vulnerability affects the Bluetooth subsystem, potentially leading to system crashes under certain conditions.
Vulnerability Detail
In the Linux kernel, a vulnerability identified as CVE-2023-53520 has been discovered within the Bluetooth subsystem. The issue arises when the hci_unregister_dev() function frees the hci_dev object while the hci_suspend_notifier may still be accessing it. This race condition can lead to a crash, resulting in system instability. The vulnerability can be exploited during Bluetooth device suspension, causing a program crash and affecting overall system performance.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. However, users are advised to avoid using Bluetooth functionalities until the package is updated to the patched version.
Conclusion
The CVE-2023-53520 vulnerability in the Linux package poses a significant risk to system stability due to potential crashes during Bluetooth device suspension. Users are urged to update their systems to the patched versions to ensure safety and reliability.
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FAQ
CVE-2023-53520 is a vulnerability in the Linux kernel's Bluetooth subsystem that can cause system crashes due to improper handling of device suspension.
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Exploitation of this vulnerability can lead to system crashes, resulting in loss of data and disruption of services that rely on Bluetooth functionalities.
Yes, patches are available for various Debian versions. Users should update to the specified patched versions to mitigate the risk.
If immediate updates are not possible, it is advisable to refrain from using Bluetooth functionalities until the system can be updated.
References
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