Stale File Descriptors Vulnerability in drm/vmwgfx
Summary
GSD-2022-1000599: drm/vmwgfx: Fix stale file descriptors on failed usercopy. Affects Kernel versions >= c906965dee22d5e95d0651759ba107b420212a9f, < 1d833b27fb708d6fdf5de9f6b3a8be4bd4321565. No fix is published. How to fix ↓
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Background
The drm/vmwgfx package is a component of the Linux Kernel that provides support for virtual graphics devices in VMware virtualization environments. It allows guest operating systems to utilize the virtual graphics hardware provided by the hypervisor. This package is widely used in virtualized environments to enable graphical capabilities for virtual machines.
Vulnerability Detail
The Stale File Descriptors vulnerability in drm/vmwgfx arises from a flaw in the usercopy mechanism. When performing a usercopy operation, if the operation fails, the file descriptors associated with the operation are not properly cleaned up, leading to stale file descriptors. An attacker could potentially exploit this vulnerability to gain unauthorized access to sensitive information or escalate privileges. The vulnerability was introduced in version v4.14 of the Linux Kernel and has been fixed in version v5.16.4.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is crucial to update to the fixed version of the Linux Kernel to ensure the security of the system.
Conclusion
The Stale File Descriptors vulnerability in drm/vmwgfx poses a potential security risk to systems running the affected versions of the Linux Kernel. It is crucial to update to the fixed version (v5.16.4 or later) to ensure the security and integrity of the system. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability could potentially allow an attacker to gain unauthorized access to sensitive information or escalate privileges.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to update to the fixed version of the Linux Kernel to mitigate any potential risks.
This vulnerability affects systems running the Linux Kernel version v4.14 or later with the drm/vmwgfx package. Systems utilizing virtual graphics devices in VMware virtualization environments are particularly vulnerable.
For further support on vulnerability remediation, you can contact info@devnack.com. They can provide guidance and assistance in updating the Linux Kernel to the fixed version.
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