net: hso: fix NULL-deref on disconnect regression
Summary
GSD-2021-1000093: net: hso: fix NULL-deref on disconnect regression. Affects Kernel versions >= 8a12f8836145ffe37e9c8733dce18c22fb668b66, < 41c44e1f3112d7265dae522c026399b2a42d19ef. No fix is published. How to fix ↓
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Background
The net package in the Linux Kernel is responsible for handling network-related functionalities. It provides various drivers and protocols for network communication. One of the drivers included in this package is hso, which is used for High-Speed Option (HSO) devices. These devices are typically used for mobile broadband connections. The hso driver allows the Linux Kernel to communicate with HSO devices and manage their network connections.
Vulnerability Detail
A vulnerability has been discovered in the hso driver of the net package in the Linux Kernel. This vulnerability can lead to a NULL-dereference error when disconnecting from an HSO device. A NULL-dereference error occurs when a program attempts to access or manipulate memory using a null pointer, resulting in a crash or potential code execution. This vulnerability was introduced in version v5.12 of the Linux Kernel and was fixed in version v5.12.1.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
The hso driver in the net package of the Linux Kernel was found to have a vulnerability that could lead to a NULL-dereference error. This vulnerability was fixed in version v5.12.1 of the Linux Kernel. Users are advised to update their Linux Kernel to the latest version to mitigate the risk associated with this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
This vulnerability can lead to a NULL-dereference error, which can cause the affected system to crash or potentially allow an attacker to execute arbitrary code.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will analyze the dependencies and alert you if any vulnerabilities are found.
At the time of this report, there are no known exploits for this vulnerability. However, it is always recommended to apply security patches promptly to mitigate any potential risks.
This vulnerability requires local access to the system in order to exploit it. However, if an attacker gains local access, they can potentially exploit this vulnerability to crash the system or execute arbitrary code.
For more details about this vulnerability, you can refer to the vulnerability report in the GSD Database: https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1000xxx/GSD-2021-1000093.json
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