Use-After-Free Vulnerability in Linux Kernel Affects RBD Device Creation

CVE-2023-53307

What is CVE-2023-53307?

A use-after-free vulnerability was identified within the Linux kernel during the RBD device creation process. This issue occurs in the function 'do_rbd_add()' when 'rbd_dev_create()' fails. Specifically, the ownership of certain structures associated with the RBD device is transferred prematurely, leading to a situation where these structures may be accessed after they have been freed. This can result in undefined behaviors, potentially allowing unauthorized actions within the kernel space, thereby compromising system integrity. The vulnerability was discovered by the Linux Verification Center and highlighted through an incomplete patch submitted for review.

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