smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerablity (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks. Upstream patch: https://git.samba.org/?p=samba.git;a=commit;h=10c3e3923022485c720f322ca4f0aca5d7501310
There is an upstream bug at: https://bugzilla.samba.org/show_bug.cgi?id=12572
This issue has been addressed in the following products: Red Hat Gluster Storage 3.2 for RHEL 7 Via RHSA-2017:2338 https://access.redhat.com/errata/RHSA-2017:2338
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2017:1950 https://access.redhat.com/errata/RHSA-2017:1950
This issue has been addressed in the following products: Red Hat Gluster Storage 3.3 for RHEL 6 Via RHSA-2017:2778 https://access.redhat.com/errata/RHSA-2017:2778