CVE ID:	CVE-2021-46923
Description:	In the Linux kernel, the following vulnerability has been resolved: fs/mount_setattr: always cleanup mount_kattr Make sure that finish_mount_kattr() is called after mount_kattr was succesfully built in both the success and failure case to prevent leaking any references we took when we built it. We returned early if path lookup failed thereby risking to leak an additional reference we took when building mount_kattr when an idmapped mount was requested.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-46923 https://git.kernel.org/stable/c/012e332286e2bb9f6ac77d195f17e74b2963d663 https://git.kernel.org/stable/c/012e332286e2bb9f6ac77d195f17e74b2963d663 https://git.kernel.org/stable/c/47b5d0a7532d39e42a938f81e3904268145c341d https://git.kernel.org/stable/c/47b5d0a7532d39e42a938f81e3904268145c341d