Security Fix(es):

• kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)
• kernel: insufficient input validation in kernel mode driver in Intel i915 graphics leads to - privilege escalation (CVE-2019-11085)
• kernel: nfs: NULL pointer dereference due to an anomalized NFS message sequence (CVE-2018-16871)
• kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c (CVE-2019-11811)

https://access.redhat.com/errata/RHSA-2019:1873?sc_cid=701600000006NHXAA2