A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.Referenceshttps://marc.info/?l=selinux&m=148588165923772&w=2https://www.debian.org/security/2017/dsa-3791https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2618https://access.redhat.com/errata/RHSA-2017:0932https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0c461cb727d146c9ef2d3e86214f498b78b7d125https://access.redhat.com/errata/RHSA-2017:0933https://access.redhat.com/errata/RHSA-2017:0931http://www.securityfocus.com/bid/96272
