In the Linux kernel, the following vulnerability has been resolved:nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party leaseIt is not safe to dereference fl->c.flc_owner without first confirmingfl->fl_lmops is the expected manager. nfsd4_deleg_getattr_conflict()tests fl_lmops but largely ignores the result and assumes that flc_owneris an nfs4_delegation anyway. This is wrong.With this patch we restore the "!= &nfsd_lease_mng_ops" case to behaveas it did before the change mentioned below. This is the same as thecurrent code, but without any reference to a possible delegation.
No PoCs from references.
- https://github.com/fkie-cad/nvd-json-data-feeds