Page Use-After-Free Vulnerability in scsi: target: tcmu

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-2022-1002385: scsi: target: tcmu: Fix possible page UAF. Affects Kernel versions < d7c5d79e50be6e06b669141e3db1f977a0dd4e8e. No fix is published. How to fix ↓

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Background

The scsi: target: tcmu package is a component of the Linux Kernel, which is responsible for handling SCSI target subsystems. It provides an interface for user-space applications to emulate SCSI devices. The tcmu module within this package allows for the creation of virtual SCSI devices using user-defined handlers. These handlers can be implemented by third-party applications to provide custom functionality for the emulated devices.

Vulnerability Detail

The identified vulnerability in the scsi: target: tcmu package is a potential page use-after-free (UAF) issue. This vulnerability could be exploited by an attacker to manipulate memory pages that have been freed, leading to potential memory corruption or unauthorized access. The exact impact and attack vectors have not been proven yet, but it is crucial to address this vulnerability to ensure the security and stability of systems running the Linux Kernel with the scsi: target: tcmu package.

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 v4.14.276 or later. This fix is implemented in commit d7c5d79e50be6e06b669141e3db1f977a0dd4e8e. Updating the kernel will ensure that the page use-after-free issue is resolved and the system is protected against potential exploitation.

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Workaround

No specific workaround has been mentioned for this vulnerability. It is advised to apply the fix by updating the Linux Kernel as mentioned in the 'how_to_fix' section.

Conclusion

The page use-after-free vulnerability in the scsi: target: tcmu package can be addressed by updating the Linux Kernel to version v4.14.276 or later. This will ensure the security and stability of systems utilizing the scsi: target: tcmu functionality. For further support on vulnerability remediation, please contact DevNack.com.

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