mcb: Fix error handling in mcb_alloc_bus()
Summary
UVI-2021-1001574: mcb: fix error handling in mcb_alloc_bus(). Affects Kernel versions >= 5d9e2ab9fea4cdf0a2522f5cbed2e7fbb220d757, < 66f74ba9be9daf9c47fface6af3677f602774f6b. 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 SoCs. 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 risks.
Vulnerability Detail
The vulnerability in mcb_alloc_bus() was introduced in version v4.7 of the Linux Kernel by commit 5d9e2ab9fea4cdf0a2522f5cbed2e7fbb220d757. It was fixed in version v4.19.209 by commit 66f74ba9be9daf9c47fface6af3677f602774f6b. The vulnerability relates to error handling in the function, which could potentially be exploited by attackers. 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
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 related to error handling. It is recommended to update the Linux Kernel to version v4.19.209 or later to fix this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The mcb package is a part of the Linux Kernel ecosystem and provides support for the Multichannel Buffered Serial Port (MCBSP) on Texas Instruments' OMAP SoCs.
The impact of this vulnerability is currently unknown as the attack plausibility has not been proven. However, it is important to update to the fixed version to mitigate any potential risks.
To fix this vulnerability, update the Linux Kernel to version v4.19.209 or later by pulling the latest updates from the official Linux Kernel repository.
No specific workaround has been provided for this vulnerability.
For more information about this vulnerability, you can refer to the source link in the database_specific section of the vulnerability details.
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