Memory Leak Vulnerability in bpf, sockmap

Kernel Updated 02 Oct 2025

Summary

03/08/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001160: bpf, sockmap: Fix potential memory leak on unlikely error case. Affects Kernel versions >= 4363023d2668e621b0743db351a9555d6e6ea57e, < 6c508a1c6c62793dc6e6872cad4b200097bab7c9. No fix is published. How to fix ↓

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Background

The bpf (Berkeley Packet Filter) is a technology in the Linux kernel that allows user-defined programs to run in the kernel space for packet filtering, network monitoring, and other network-related tasks. Sockmap is a feature in bpf that allows socket redirection and load balancing. This vulnerability affects the Linux Kernel package.

Vulnerability Detail

The vulnerability in bpf, sockmap can lead to a potential memory leak in an unlikely error case. If this vulnerability is exploited, it could result in memory exhaustion, leading to system instability or denial of service. The vulnerability was introduced in version v5.10 of the Linux Kernel and has been fixed in version v5.13.6.

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.

Conclusion

The memory leak vulnerability in bpf, sockmap can lead to memory exhaustion and system instability. It is crucial to update the Linux Kernel package to version v5.13.6 or later to mitigate this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.

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FAQ

What is bpf and sockmap?

bpf (Berkeley Packet Filter) is a technology in the Linux kernel that allows user-defined programs to run in the kernel space for packet filtering, network monitoring, and other network-related tasks. Sockmap is a feature in bpf that allows socket redirection and load balancing.