Stale File Descriptors Vulnerability in drm/vmwgfx
Summary
GSD-2022-1000239: drm/vmwgfx: Fix stale file descriptors on failed usercopy. Affects Kernel versions >= c906965dee22d5e95d0651759ba107b420212a9f, < 6066977961fc6f437bc064f628cf9b0e4571c56c. 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 VMware graphics devices. It allows virtual machines running on VMware platforms to utilize accelerated graphics capabilities. The package is responsible for managing the communication between the virtual machine and the host system's graphics hardware. However, a vulnerability has been discovered in the package that could lead to the presence of stale file descriptors on failed usercopy operations.
Vulnerability Detail
The vulnerability in drm/vmwgfx arises from a failure to properly handle file descriptors during usercopy operations. When a usercopy operation fails, the package does not correctly clean up the associated file descriptors, resulting in stale file descriptors. An attacker could potentially exploit this vulnerability to gain unauthorized access to sensitive information or escalate their privileges on the affected system. 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.
Conclusion
In conclusion, the drm/vmwgfx package in the Linux Kernel is vulnerable to a stale file descriptors issue on failed usercopy operations. This vulnerability could potentially lead to unauthorized access or privilege escalation. It is recommended to update to Linux Kernel version v5.15.18 or later to address this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability could potentially allow an attacker to gain unauthorized access to sensitive information or escalate their privileges on the affected system.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground, and it will provide real-time monitoring and alerts for open-source vulnerabilities.
No known exploits for this vulnerability have been reported at this time.
Yes, a patch for this vulnerability is available in the Linux Kernel version v5.15.18. It is recommended to update to this version or later to mitigate the risk.
You can find more information about this vulnerability in the GSD-2022-1000239 JSON report at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2022/1000xxx/GSD-2022-1000239.json.
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