Vulnerability in Kernel Package: blk-throttle
Summary
GSD-2022-1003061: blk-throttle: Set BIO_THROTTLED when bio has been throttled. Affects Kernel versions < 0cfc8a0fb07cde61915e4a77c4794c47de3114a4. No fix is published. How to fix ↓
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Background
The Kernel package is a fundamental component of the Linux operating system, responsible for managing the system's core functions. It provides an interface between the hardware and software layers, allowing applications to communicate with the underlying hardware. The blk-throttle vulnerability affects the Kernel package and specifically impacts the handling of block I/O (Input/Output) operations. This vulnerability allows an attacker to manipulate the throttling mechanism, potentially leading to resource exhaustion and denial of service.
Vulnerability Detail
The blk-throttle vulnerability arises from a failure to properly set the BIO_THROTTLED flag when a block I/O operation has been throttled. This flag is crucial for identifying and managing throttled I/O requests. By exploiting this vulnerability, an attacker can bypass the throttling mechanism and cause excessive I/O requests, consuming system resources and potentially leading to a denial of service condition. This vulnerability has been addressed in the Linux Kernel version v5.17.14 by commit 0cfc8a0fb07cde61915e4a77c4794c47de3114a4.
How To Fix
No fixed version is published for this vulnerability.
To fix this vulnerability, it is recommended to update the Kernel package to version v5.17.14 or later. This can be achieved by downloading the latest version from the official Linux Kernel repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and following the installation instructions provided. Alternatively, users can rely on package managers or system update mechanisms to automatically install the updated Kernel version.
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Workaround
No specific workaround has been mentioned for this vulnerability.
Conclusion
The blk-throttle vulnerability in the Kernel package allows attackers to bypass the throttling mechanism, potentially leading to resource exhaustion and denial of service. It is crucial to update the Kernel package to version v5.17.14 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to bypass the throttling mechanism in the Kernel package, potentially leading to resource exhaustion and denial of service.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over a network.
There are no known instances of this vulnerability being exploited in the wild at the time of this report.
No, access controls alone cannot mitigate this vulnerability. Updating to the fixed version of the Kernel package is necessary.
Yes, 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 provide real-time alerts for open-source vulnerabilities, including this one.
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