Memory Leak Vulnerability in Linux Kernel

Kernel Updated 02 Oct 2025

Summary

27/02/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1000318: net: fix a memleak when uncloning an skb dst and its metadata. Affects Kernel versions >= fc4099f17240767554ff3a73977acb78ef615404, < 0be943916d781df2b652793bb2d3ae4f9624c10a. No fix is published. How to fix ↓

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Background

The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing essential services. It is widely used in various devices, including servers, desktops, and embedded systems. The vulnerability identified in this report pertains to the handling of skb dst and its metadata in the networking subsystem of the Linux Kernel.

Vulnerability Detail

The vulnerability arises when uncloning an skb dst and its metadata, leading to a memory leak. This means that when certain operations are performed on the skb dst, memory resources are not properly released, resulting in a gradual depletion of available memory. If exploited, this vulnerability could lead to system instability, performance degradation, and potentially enable an attacker to execute arbitrary code or launch denial-of-service attacks.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

As a workaround, users can apply the patch provided in the commit (0be943916d781df2b652793bb2d3ae4f9624c10a) manually. Here is an example of how to apply the patch:

Download the patch file from the commit: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0be943916d781df2b652793bb2d3ae4f9624c10a
Navigate to the Linux Kernel source code directory.
Apply the patch using the git apply command:
```
git apply /path/to/patch/file
```
Recompile and reinstall the Linux Kernel.

Conclusion

In conclusion, a memory leak vulnerability has been identified in the Linux Kernel, specifically related to the handling of skb dst and its metadata. This vulnerability can lead to memory depletion, system instability, and potential security risks. It is crucial to update the Linux Kernel to the recommended version or apply the provided patch to mitigate the vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.

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