Vulnerability in Kernel Package: bpf: Add oversize check before call kvcalloc()
Summary
GSD-2021-1001667: bpf: Add oversize check before call kvcalloc(). Affects Kernel versions < 6345a0bee80139ea00a341c4202ebfd1534b5eb0. No fix is published. How to fix ↓
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Background
The Kernel package is a critical component of the Linux operating system. It provides the core functionality and acts as an interface between the hardware and software layers. The bpf subsystem within the Kernel allows users to write and execute custom programs that run in a restricted environment. These programs can be used for various purposes, including network packet filtering and performance monitoring. However, a vulnerability has been discovered in the bpf subsystem that could potentially be exploited by attackers.
Vulnerability Detail
The vulnerability in the bpf subsystem arises from a missing oversize check before calling the kvcalloc() function. This oversight could lead to memory allocation errors, resulting in potential security vulnerabilities. While the exact impact and attack plausibility have not been proven, it is crucial to address this issue to prevent any potential exploitation. The vulnerability has been fixed in the Linux Kernel version v5.10.70 by commit 6345a0bee80139ea00a341c4202ebfd1534b5eb0.
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. It is advised to update the Kernel package to the fixed version as soon as possible.
Conclusion
The vulnerability in the bpf subsystem of the Kernel package can potentially lead to security vulnerabilities. It is crucial to update the package to the fixed version to mitigate any potential risks. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The Kernel package is a critical component of the Linux operating system that provides core functionality and acts as an interface between the hardware and software layers.
The bpf subsystem is a part of the Kernel that allows users to write and execute custom programs in a restricted environment. These programs can be used for various purposes, such as network packet filtering and performance monitoring.
The exact impact of this vulnerability is not yet proven. However, it could potentially lead to memory allocation errors and other security vulnerabilities.
To fix this vulnerability, you should update the Kernel package to version v5.10.70 or later. Follow the official update process provided by your Linux distribution.
There is no specific workaround mentioned for this vulnerability. It is recommended to update the Kernel package to the fixed version.
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