CVE-2023-52801 iommufd: Fix missing update of domains_itree after splitting iopt_area

In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix missing update of domainsitree after splitting ioptarea In ioptareasplit, if the original ioptarea has filled a domain and is linked to domainsitree, pagesnodes have to be properly reinserted. Otherwise the...

CVE-2023-52801

CVE-2023-52801 concerns the Linux kernel iommufd code. In iopt_area_split(), if the original iopt_area had filled a domain and is linked to domains_itree, pages_nodes must be reintegrated; otherwise domains_itree becomes corrupted and leads to use-after-free. The vulnerability is resolved by ensu...