In the Linux kernel, the following vulnerability has been resolved: NFS: Fix an Oops in nfs_d_automount() When mounting from a NFSv4 referral, path->dentry can end up being a negative dentry, so derive the struct nfs_server from the dentry itself instead.
https://git.kernel.org/stable/c/f12377abac15fb4e8698225ac386894f8ae63598
https://git.kernel.org/stable/c/b6fd25d64b0de27991d6bd677f0adf69ad6ff07a
https://git.kernel.org/stable/c/6f3d56783fbed861e483736a7001bdafd0dddd53
https://git.kernel.org/stable/c/5458bc0f9df639d83471ca384152cc62dbee0aeb
https://git.kernel.org/stable/c/35e3b6ae84935d0d7ff76cbdaa83411b0ad5e471