Memory Leak Vulnerability in perf bpf Package
Summary
GSD-2021-1002328: perf bpf: Avoid memory leak from perf_env__insert_btf(). Affects Kernel versions >= 3792cb2ff43b1b193136a03ce1336462a827d792, < ab7c3d8d81c511ddfb27823fb07081c96422b56e. No fix is published. How to fix ↓
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Background
The perf bpf package is a component of the Linux Kernel ecosystem. It provides functionality for performance monitoring and analysis using Berkeley Packet Filter (BPF) programs. BPF programs can be attached to various kernel events to collect data and perform analysis. The package is widely used in Linux systems for performance profiling and debugging purposes.
Vulnerability Detail
The vulnerability identified in the perf bpf package is related to a memory leak issue in the perf_env__insert_btf() function. This function is responsible for inserting BPF Type Format (BTF) data into the perf environment. The memory leak occurs when the function fails to release allocated memory in certain error scenarios. An attacker could potentially exploit this vulnerability to exhaust system memory resources, leading to a denial-of-service condition. The impact and attack plausibility of this vulnerability have not been proven yet.
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. The recommended approach is to apply the fix by updating the Linux Kernel to the latest stable version.
Conclusion
The memory leak vulnerability in the perf bpf package can be mitigated by updating the Linux Kernel to the latest stable version. Users should ensure they are running Linux Kernel v5.15.5 or later to address this issue. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The perf bpf package is a component of the Linux Kernel ecosystem that provides functionality for performance monitoring and analysis using Berkeley Packet Filter (BPF) programs.
BPF Type Format (BTF) data is a representation of the types and structures used by BPF programs. It allows for better analysis and debugging of BPF programs.
The impact of this vulnerability is a potential denial-of-service condition due to memory exhaustion. However, the actual impact and attack plausibility have not been proven yet.
To fix this vulnerability, update your Linux Kernel to the latest stable version (v5.15.5 or later) where the issue has been addressed.
There is no specific workaround mentioned for this vulnerability. It is recommended to apply the fix by updating the Linux Kernel.
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