Memory Leak Vulnerability in perf bpf Package
Summary
GSD-2021-1002265: perf bpf: Avoid memory leak from perf_env__insert_btf(). Affects Kernel versions >= 3792cb2ff43b1b193136a03ce1336462a827d792, < 642fc22210a5e59d40b1e4d56d21ec3effd401f2. 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 profiling using Berkeley Packet Filter (BPF) programs. BPF programs are used to analyze and filter network packets efficiently. The package is widely used in Linux-based systems for performance analysis and troubleshooting purposes.
Vulnerability Detail
The vulnerability identified as GSD-2021-1002265 in the perf bpf package can lead to a memory leak. Specifically, the issue arises from the perf_env__insert_btf() function. This vulnerability was introduced in version v5.1 of the Linux Kernel and was fixed in version v5.4.162. The impact and attack plausibility of this vulnerability have not been proven yet. However, if exploited, it could potentially result in memory exhaustion, leading to system instability or denial of service.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a workaround, users can avoid the memory leak by refraining from using the affected functionality of the perf bpf package until the Linux Kernel is updated to the fixed version.
Conclusion
In conclusion, the perf bpf package in the Linux Kernel is vulnerable to a memory leak issue. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.4.162 or later. Users can also check the vulnerability status of their applications using Vulert's playground at https://vulert.com/scanner. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The perf bpf package is a component of the Linux Kernel ecosystem that enables performance monitoring and profiling using Berkeley Packet Filter (BPF) programs.
If exploited, this vulnerability can result in memory exhaustion, potentially leading to system instability or denial of service.
To fix this vulnerability, update the Linux Kernel to version v5.4.162 or later, which includes the necessary fix for the memory leak issue.
Yes, users can avoid the memory leak by refraining from using the affected functionality of the perf bpf package until the Linux Kernel is updated.
The impact and attack plausibility of this vulnerability have not been proven yet. However, it is recommended to apply the fix as a precautionary measure.
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