Race Condition Vulnerability in xen/arm Package
Summary
GSD-2022-1004716: xen/arm: Fix race in RB-tree based P2M accounting. Affects Kernel versions < 5c03cad51b84fb26ccea7fd99130d8ec47949cfc. No fix is published. How to fix ↓
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Background
The xen/arm package is a component of the Linux Kernel that provides support for Xen virtualization on ARM-based systems. It includes various functionalities related to memory management and virtual machine operations. The package utilizes a Red-Black tree (RB-tree) based P2M accounting mechanism for efficient memory mapping. However, a race condition vulnerability has been identified in this package, which could lead to potential security issues.
Vulnerability Detail
The race condition vulnerability in the xen/arm package arises due to improper synchronization in the RB-tree based P2M accounting. This vulnerability could be exploited by an attacker to manipulate memory mappings and potentially gain unauthorized access or perform arbitrary code execution. The vulnerability has been fixed in the Linux Kernel version v5.4.204 by commit 5c03cad51b84fb26ccea7fd99130d8ec47949cfc.
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 race condition vulnerability in the xen/arm package can be addressed by updating the Linux Kernel to version v5.4.204 or later. This will ensure the proper synchronization of RB-tree based P2M accounting and mitigate the potential security risks. For further support or assistance in vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The vulnerability could potentially allow an attacker to manipulate memory mappings and gain unauthorized access or execute arbitrary code.
As of now, there is no known exploit for this vulnerability.
Yes, this vulnerability can be exploited remotely if the affected system is accessible over the network.
The recommended mitigation is to update the Linux Kernel to the fixed version mentioned above.
For more details about this vulnerability, you can refer to the source link provided in the database_specific section of the vulnerability details.
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