Memory Leak Vulnerability in x86/MCE/AMD Kernel
Summary
GSD-2022-1003443: x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails. Affects Kernel versions >= 6458de97fc15530b54477c4e2b70af653e8ac3d9, < cc0dd4456f9573bf8af9b4d8754433918e809e1e. No fix is published. How to fix ↓
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Background
The x86/MCE/AMD kernel is a component of the Linux operating system that handles machine check exceptions (MCE) on x86-based systems with AMD processors. MCEs are hardware errors that occur when the CPU detects a problem with its internal state or with other hardware components. The kernel provides mechanisms to handle and recover from these errors. However, a vulnerability has been discovered in the kernel that can lead to a memory leak when the threshold_create_bank() function fails.
Vulnerability Detail
The vulnerability in the x86/MCE/AMD kernel arises from a memory leak that occurs when the threshold_create_bank() function fails. When this function fails, it does not properly release the memory allocated during its execution, resulting in a memory leak. An attacker could potentially exploit this vulnerability to exhaust system memory resources, leading to a denial of service (DoS) condition. The impact and attack plausibility of this vulnerability have not yet been proven.
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
In conclusion, the x86/MCE/AMD kernel in the Linux operating system is vulnerable to a memory leak issue when the threshold_create_bank() function fails. This vulnerability can potentially lead to a denial of service (DoS) condition. It is recommended to update the kernel to version v5.15.46 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The x86/MCE/AMD kernel is a component of the Linux operating system that handles machine check exceptions (MCE) on x86-based systems with AMD processors.
A memory leak is a type of software defect where allocated memory is not properly released, leading to a gradual loss of available memory resources.
The impact of this vulnerability is a potential denial of service (DoS) condition, where an attacker could exhaust system memory resources by exploiting the memory leak.
To fix this vulnerability, it is recommended to update the Linux kernel to version v5.15.46 or later, which includes the necessary fix for the memory leak issue.
No specific workaround has been mentioned for this vulnerability.
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