Out of Bounds Access Vulnerability in kyber
Summary
UVI-2021-1000198: kyber: fix out of bounds access when preempted. Affects Kernel versions >= a6088845c2bf754d6cb2572b484180680b037804, < 2ef3c76540c49167a0bc3d5f80d00fd1fc4586df. No fix is published. How to fix ↓
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Background
The kyber package is a component of the Linux Kernel, which is responsible for managing I/O scheduling for block devices. It provides an interface for controlling the order in which I/O requests are processed. The vulnerability in kyber arises from an out of bounds access issue when the process is preempted. This vulnerability was introduced in version v4.18 of the Linux Kernel and has been fixed in version v5.12.5.
Vulnerability Detail
The out of bounds access vulnerability in kyber occurs when a process is preempted. This can lead to unauthorized access to memory locations outside the bounds of the allocated buffer. An attacker could potentially exploit this vulnerability to read sensitive information or modify critical data, leading to a variety of security risks such as information disclosure, privilege escalation, or denial of service.
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 advised to apply the recommended fix by updating the Linux Kernel to the latest version.
Conclusion
The out of bounds access vulnerability in kyber can pose significant security risks, including unauthorized access to sensitive information and potential data manipulation. It is crucial to update the Linux Kernel to version v5.12.5 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
Kyber is a component of the Linux Kernel responsible for I/O scheduling for block devices.
The vulnerability occurs when a process is preempted, leading to unauthorized access to memory locations outside the allocated buffer.
The vulnerability can be exploited to read sensitive information, modify critical data, and potentially lead to information disclosure, privilege escalation, or denial of service.
Yes, the vulnerability has been fixed in Linux Kernel version v5.12.5.
To fix the vulnerability, update the Linux Kernel to version v5.12.5 or later.
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