Out-of-bounds read vulnerability in um package

Kernel Updated 02 Oct 2025

Summary

28/06/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1003987: um: Fix out-of-bounds read in LDT setup. Affects Kernel versions >= 858259cf7d1c443c836a2022b78cb281f0a9b95e, < ef1dc929a1e5fa1b2d842256db9fb8710d3be910. No fix is published. How to fix ↓

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Background

The um package is a component of the Linux Kernel, which is responsible for running user-mode Linux processes. It provides a virtual machine environment that allows multiple instances of Linux to run on a single host system. The um package includes various features and functionalities to support the execution of user-mode Linux processes.

Vulnerability Detail

The um package is affected by an out-of-bounds read vulnerability in the LDT (Local Descriptor Table) setup. This vulnerability was introduced in version v2.6.15 of the Linux Kernel and has been present until version v4.14.283. The vulnerability allows an attacker to read data from memory locations beyond the bounds of the intended buffer, potentially leading to information disclosure or other security issues. 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.

Conclusion

The um package in the Linux Kernel is affected by an out-of-bounds read vulnerability in the LDT setup. To mitigate this vulnerability, it is recommended to update the kernel to version v4.14.283 or later. For more information and assistance, please contact DevNack.com.

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