Vulnerability in Kernel package: scsi: target: tcmu: Fix possible page UAF

Kernel Updated 02 Oct 2025

Summary

24/04/2022

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2022-1001653: scsi: target: tcmu: Fix possible page UAF. Affects Kernel versions < b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322. No fix is published. How to fix ↓

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Background

The Kernel package is a critical component of the Linux operating system, responsible for managing the system's core functions and facilitating communication between hardware and software. It provides essential services such as memory management, process scheduling, and device drivers. The scsi: target: tcmu module within the Kernel package is specifically designed to handle SCSI target emulation for user-space applications. It allows users to create virtual SCSI devices and perform various operations on them. However, a vulnerability has been discovered in this module that could potentially lead to a use-after-free (UAF) issue, resulting in a security compromise.

Vulnerability Detail

The vulnerability in the scsi: target: tcmu module arises from a possible page use-after-free (UAF) scenario. This occurs when a page of memory is freed but still accessed by the program, leading to unpredictable behavior and potential security risks. Exploiting this vulnerability could allow an attacker to execute arbitrary code, escalate privileges, or cause a denial-of-service (DoS) condition. The impact and attack plausibility of this vulnerability have not been proven yet. It is important to note that this vulnerability has been fixed in the Linux Kernel version v5.15.35 through commit b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322.

How To Fix

No fixed version is published for this vulnerability.

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Conclusion

In conclusion, a vulnerability has been identified in the scsi: target: tcmu module of the Kernel package. This vulnerability could potentially lead to a use-after-free (UAF) issue, allowing attackers to execute arbitrary code, escalate privileges, or cause a denial-of-service (DoS) condition. It is crucial to update the Linux Kernel package to version v5.15.35 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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