CVE-2025-40212

CVE-2025-40212 (Linux kernel) : A refcount leak in nfsd_set_fh_dentry() can occur when a v3/v2 client uses a filehandle from the NFSv4 “pseudo root filesystem.” The kernel may store the export in a svc_fh and drop a reference later (exp_put()), causing an extra reference to be freed on fh_put(), ...