In the Linux kernel, the following vulnerability has been resolved: nfsd: Fix error cleanup path in nfsd_rename() Commit a8b0026847b8 ("rename(): avoid a deadlock in the case of parents having no common ancestor") added an error bail out path. However this path does not drop the remount protection that has been acquired. Fix the cleanup path to properly drop the remount protection.
https://git.kernel.org/stable/c/9fe6e9e7b58944037714442384075c17cfde1c56
https://git.kernel.org/stable/c/331e125e02c08ffaecc1074af78a988a278039bd