mcb: Fix error handling in mcb_alloc_bus()

Kernel Updated 02 Oct 2025

Summary

19/10/2021

Disclosed on

N/A

Severity

No i

Fix available

Unrated

Severity

Not published

CVSS Score

GSD-2021-1001764: mcb: fix error handling in mcb_alloc_bus(). Affects Kernel versions >= 5d9e2ab9fea4cdf0a2522f5cbed2e7fbb220d757, < 9fc198f415dee070a1de957bb5bf5921d8df3499. No fix is published. How to fix ↓

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Background

The mcb package is a part of the Linux Kernel ecosystem. It provides support for the Multichannel Buffered Serial Port (MCBSP) on Texas Instruments' OMAP processors. The mcb_alloc_bus() function is responsible for allocating resources for the MCBSP bus. However, a vulnerability has been discovered in this function that could lead to potential security issues.

Vulnerability Detail

The vulnerability in mcb_alloc_bus() was introduced in version v4.7 of the Linux Kernel by commit 5d9e2ab9fea4cdf0a2522f5cbed2e7fbb220d757. It affects all versions of the Kernel until v5.14.9, where it was fixed by commit 9fc198f415dee070a1de957bb5bf5921d8df3499. The vulnerability involves improper error handling, which could result in security vulnerabilities. The exact impact and attack plausibility have not been proven yet.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

No specific workaround has been provided for this vulnerability.

Conclusion

The mcb_alloc_bus() function in the mcb package of the Linux Kernel has a vulnerability that could lead to security issues. It is recommended to update the Kernel to version v5.14.9 or later to fix this vulnerability. For more information and support on vulnerability remediation, please contact DevNack.com.

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