Memory Leak Vulnerability in iommu/vt-d Package
Summary
GSD-2022-1000113: iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping(). Affects Kernel versions >= 03992c88d71ba79d956f2ed54e370e630b8750f4, < a0c685ba99961b1dd894b2e470e692a539770f6d. No fix is published. How to fix ↓
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Background
The iommu/vt-d package is a component of the Linux Kernel that provides support for Input-Output Memory Management Unit (IOMMU) and Virtualization Technology for Directed I/O (VT-d). It enables secure device assignment in virtualized environments by allowing direct access to devices from virtual machines. This package is widely used in systems that require efficient and secure device virtualization.
Vulnerability Detail
The vulnerability identified in the iommu/vt-d package is a potential memory leak in the intel_setup_irq_remapping() function. This function is responsible for setting up interrupt remapping for Intel IOMMU devices. The memory leak occurs when the function fails to properly release allocated memory in certain error conditions. An attacker could potentially exploit this vulnerability to exhaust system memory resources, leading to a denial-of-service condition or other unpredictable behavior. 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
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by applying the recommended fix and updating their Linux Kernel to the latest version.
Conclusion
In conclusion, the iommu/vt-d package in the Linux Kernel is vulnerable to a potential memory leak in the intel_setup_irq_remapping() function. This vulnerability can be mitigated by updating the Linux Kernel to version v4.14.265 or later. It is recommended to apply the fix and keep the system up to date to ensure the security and stability of the device virtualization environment. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The iommu/vt-d package is a component of the Linux Kernel that provides support for Input-Output Memory Management Unit (IOMMU) and Virtualization Technology for Directed I/O (VT-d). It enables secure device assignment in virtualized environments by allowing direct access to devices from virtual machines.
The impact of this vulnerability is not yet proven. However, it could potentially lead to a denial-of-service condition or other unpredictable behavior by exhausting system memory resources.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.14.265 or later. This will ensure that the memory leak is properly addressed.
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by applying the recommended fix and updating their Linux Kernel to the latest version.
For more information about this vulnerability, you can refer to the source link provided in the database_specific section of the vulnerability details.
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