CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's VDUSE (virtio device in userspace) implementation, specifically in the `vduse_dev_open()` function, where improper lock handling can lead to a use-after-free condition. This flaw allows a concurrent process to remove and free a device object while another process is attempting to access it, potentially leading to system instability or exploitation. Organizations utilizing Linux systems with VDUSE should prioritize patching this vulnerability to mitigate risks associated with concurrent device management.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.