Incomplete File Descriptor Closure in binder
Summary
GSD-2021-1001766: binder: make sure fd closes complete. Affects Kernel versions >= 80cd795630d6526ba729a089a435bf74a57af927, < b95483d8d94b41fa31a84c1d86710b7907a37621. No fix is published. How to fix ↓
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Background
The binder is a kernel-level inter-process communication mechanism used in the Linux Kernel. It allows processes to communicate with each other by passing messages and sharing data. The vulnerability in binder arises from incomplete file descriptor closure, which can lead to potential security risks.
Vulnerability Detail
The vulnerability in binder occurs when file descriptors are not properly closed, leaving them open and accessible to unauthorized entities. This can result in various security issues, such as information disclosure, privilege escalation, or denial of service attacks. The vulnerability was introduced in Linux Kernel version v5.0 and was fixed in version v5.14.9.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is essential to apply the patch provided in the updated Linux Kernel to address the issue effectively.
Conclusion
The incomplete closure of file descriptors in binder can pose significant security risks. It is crucial to update the Linux Kernel to version v5.14.9 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Binder is a kernel-level inter-process communication mechanism used in the Linux Kernel. It enables processes to communicate with each other by passing messages and sharing data.
The incomplete closure of file descriptors in binder can lead to security risks such as information disclosure, privilege escalation, or denial of service attacks.
The vulnerability was introduced in Linux Kernel version v5.0 and affects all versions up to v5.14.8. It is fixed in version v5.14.9.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.14.9 or later. This update includes the necessary patch to ensure complete closure of file descriptors in binder.
No, there is no specific workaround available for this vulnerability. It is crucial to apply the patch provided in the updated Linux Kernel to address the issue effectively.
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