In the Linux kernel, the following vulnerability has been resolved: vfio/mdev: Fix a null-ptr-deref bug for mdev_unregister_parent() The Linux kernel CVE team has assigned CVE-2023-52570 to this issue. Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024030255-CVE-2023-52570-0789@gregkh/T/#u