Fix dangling sco_conn and use-after-free in sco_sock_timeout in Kernel
Summary
GSD-2022-1004009: Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout. Affects Kernel versions >= 0115a66ebb44bd9127ccb58cf43ed23c795eb1f0, < 7d61dbd7311ab978d8ddac1749a758de4de00374. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures the overall stability and security of the system. The vulnerability in question affects the Bluetooth functionality of the Kernel.
Vulnerability Detail
The vulnerability, identified as GSD-2022-1004009, involves a dangling sco_conn and use-after-free issue in sco_sock_timeout. This vulnerability can potentially be exploited by an attacker to execute arbitrary code or cause a denial-of-service condition. The vulnerability was introduced in version v4.14.247 of the Linux Kernel and has been fixed in version v4.14.283 through commit 7d61dbd7311ab978d8ddac1749a758de4de00374.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can disable Bluetooth functionality on their systems until the Kernel is updated. This can be done by executing the following command as root:
$ echo 'blacklist btusb' >> /etc/modprobe.d/blacklist.conf
After applying this workaround, a system reboot may be required.
Conclusion
The vulnerability in the Kernel's Bluetooth functionality, identified as GSD-2022-1004009, can potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition. It is crucial to update the Linux Kernel to version v4.14.283 or later to mitigate this vulnerability. Alternatively, users can disable Bluetooth functionality as a temporary workaround. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
This vulnerability can potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition on systems with the affected Kernel version.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, there is no known public exploit for this vulnerability. However, it is important to apply the recommended fix or workaround as soon as possible to mitigate any potential risks.
Yes, this vulnerability can be exploited remotely if the affected system has Bluetooth functionality enabled and is connected to a malicious Bluetooth device or network.
The vulnerability can be exploited if the system has the affected Kernel version and Bluetooth functionality enabled. No additional dependencies or prerequisites are required.
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