Use-after-free vulnerability in atm: iphase package

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-2021-1001460: atm: iphase: fix possible use-after-free in ia_module_exit(). Affects Kernel versions < a832ee2f2145f57443b2d565f8cb5490e8339f42. No fix is published. How to fix ↓

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Background

The atm: iphase package is a component of the Linux Kernel, which is responsible for handling Asynchronous Transfer Mode (ATM) interfaces. It provides support for ATM networking and communication protocols. The package is widely used in Linux-based systems for ATM-related operations.

Vulnerability Detail

The identified vulnerability in the atm: iphase package is a use-after-free issue in the ia_module_exit() function. This vulnerability occurs when a module is unloaded, and a reference to a data structure is accessed after it has been freed. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service (DoS) condition.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.9.276 or later. The fix for this specific issue can be found in commit a832ee2f2145f57443b2d565f8cb5490e8339f42 of the Linux Kernel repository. Updating the Kernel to the patched version will ensure that the use-after-free vulnerability is addressed.

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Workaround

There is no known workaround available for this vulnerability. It is essential to apply the recommended fix by updating the Linux Kernel to the patched version.

Conclusion

The use-after-free vulnerability in the atm: iphase package of the Linux Kernel can be mitigated by updating the Kernel to version v4.9.276 or later. It is crucial to apply this fix to prevent potential exploitation of the vulnerability. For further support or assistance in vulnerability remediation, you can reach out to DevNack.com.

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FAQ

What is the impact of this vulnerability?

The use-after-free vulnerability in atm: iphase can potentially be exploited by attackers to execute arbitrary code or cause a denial-of-service (DoS) condition.

How can I check if my system is affected by this vulnerability?

You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this use-after-free issue.