Memory Leak Vulnerability in cgroup Package
Summary
GSD-2021-1002198: cgroup: Fix memory leak caused by missing cgroup_bpf_offline. Affects Kernel versions >= 2b0d3d3e4fcfb19d10f9a82910b8f0f05c56ee3e, < 04f8ef5643bcd8bcde25dfdebef998aea480b2ba. No fix is published. How to fix ↓
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Background
The cgroup package is a component of the Linux Kernel that provides resource isolation and resource usage control for processes. It allows administrators to allocate resources such as CPU, memory, and I/O to groups of processes. The cgroup package is widely used in Linux systems to manage resource allocation and ensure fair sharing among processes. However, a vulnerability has been discovered in the cgroup package that can lead to a memory leak.
Vulnerability Detail
The memory leak vulnerability in the cgroup package is caused by a missing cgroup_bpf_offline function. This function is responsible for freeing memory resources when a cgroup is destroyed. Without this function, memory allocated for the cgroup is not properly released, resulting in a memory leak. An attacker could potentially exploit this vulnerability to exhaust system memory resources, leading to a denial-of-service condition. The vulnerability was introduced in version v5.10 of the Linux Kernel and has been fixed in version v5.15.
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 necessary to update the Linux Kernel to the fixed version to address the memory leak issue.
Conclusion
The memory leak vulnerability in the cgroup package can have serious consequences, including system instability and denial-of-service conditions. It is crucial to update the Linux Kernel to the fixed version to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The cgroup package is a component of the Linux Kernel that provides resource isolation and resource usage control for processes.
The vulnerability can lead to a memory leak, potentially causing a denial-of-service condition by exhausting system memory resources.
To fix this vulnerability, update the Linux Kernel to version v5.15 or later.
No, there is no known workaround for this vulnerability. Updating the Linux Kernel is the recommended solution.
The vulnerability was introduced in version v5.10 of the Linux Kernel and fixed in version v5.15.
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