Race Condition Vulnerability in rpmsg char
Summary
GSD-2022-1000154: rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev. Affects Kernel versions >= c0cdc19f84a4712cf74888f83af286e3c2e14efd, < da27b834c1e0222e149e06caddf7718478086d1b. No fix is published. How to fix ↓
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Background
The rpmsg char is a component of the Linux Kernel that provides support for remote processor messaging. It allows communication between different processors in a system. The vulnerability in rpmsg char arises from a race condition between the release of rpmsg_ctrldev and cdev. This race condition can lead to unexpected behavior and potential security vulnerabilities.
Vulnerability Detail
The race condition vulnerability occurs when there is a simultaneous release of rpmsg_ctrldev and cdev. This can result in inconsistent state management and potential access to freed memory. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial of service. The vulnerability was introduced in Linux Kernel version 4.11 and is fixed in version 5.4.176.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is recommended to apply the official patch or update the Linux Kernel to the fixed version.
Conclusion
The race condition vulnerability in rpmsg char can lead to unexpected behavior and potential security risks. It is crucial to update the Linux Kernel to the fixed version or apply the official patch to mitigate this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
rpmsg char is a component of the Linux Kernel that enables communication between different processors in a system.
A race condition is a software vulnerability that occurs when multiple processes or threads access shared resources in an unexpected order, leading to unpredictable behavior.
The race condition vulnerability in rpmsg char could allow an attacker to execute arbitrary code or cause a denial of service.
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For more details about this vulnerability, you can refer to the Open Source Vulnerability Database entry GSD-2022-1000154 (https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000154.json).
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