Description of problem:
SELinux is preventing kexec from 'read' accesses on the file vmlinuz-4.3.4-300.fc23.x86_64.

*****  Plugin restorecon (99.5 confidence) suggests   ************************

If you want to fix the label. 
vmlinuz-4.3.4-300.fc23.x86_64 default label should be boot_t.
Then you can run restorecon.
Do
# /sbin/restorecon -v vmlinuz-4.3.4-300.fc23.x86_64

*****  Plugin catchall (1.49 confidence) suggests   **************************

If you believe that kexec should be allowed read access on the vmlinuz-4.3.4-300.fc23.x86_64 file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep kexec /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:kdump_t:s0
Target Context                system_u:object_r:modules_object_t:s0
Target Objects                vmlinuz-4.3.4-300.fc23.x86_64 [ file ]
Source                        kexec
Source Path                   kexec
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-158.2.fc23.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.3.4-300.fc23.x86_64 #1 SMP Mon
                              Jan 25 13:39:23 UTC 2016 x86_64 x86_64
Alert Count                   6
First Seen                    2016-02-01 17:03:37 CET
Last Seen                     2016-02-06 16:06:26 CET
Local ID                      4b12eed7-b9a4-4ab8-959b-0b0fb0c9eace

Raw Audit Messages
type=AVC msg=audit(1454771186.173:584): avc:  denied  { read } for  pid=19005 comm="kexec" name="vmlinuz-4.3.4-300.fc23.x86_64" dev="sda2" ino=17 scontext=system_u:system_r:kdump_t:s0 tcontext=system_u:object_r:modules_object_t:s0 tclass=file permissive=0


Hash: kexec,kdump_t,modules_object_t,file,read

Version-Release number of selected component:
selinux-policy-3.13.1-158.2.fc23.noarch

Additional info:
reporter:       libreport-2.6.4
hashmarkername: setroubleshoot
kernel:         4.3.4-300.fc23.x86_64
type:           libreport

Potential duplicate: bug 1244057