Rkhunter shows 5 rootkits
System checks summary
File properties checks...
Files checked: 149
Suspect files: 0
Rootkit checks...
Rootkits checked : 480
Possible rootkits: 5
Applications checks...
All checks skipped
Info: Starting test name 'ipc_shared_mem'
[11:13:02] Info: The minimum shared memory segment size to be checked (in bytes): 1048576 (1,0MB)
[11:13:02] Checking for suspicious (large) shared memory segments [ Warning ]
[11:13:02] Warning: The following suspicious (large) shared memory segments have been found:
[11:13:02] Process: /usr/bin/mousepad PID: 1533 Owner: abigael Size: 4,0MB (configured size allowed: 1,0MB)
[11:13:02] Process: /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 PID: 1159 Owner: abigael Size: 4,0MB (configured size allowed: 1,0MB)
[11:13:02] Process: /usr/lib/firefox/firefox PID: 29723 Owner: abigael Size: 2,4MB (configured size allowed: 1,0MB)
[11:13:02] Process: /usr/lib/firefox/firefox PID: 29723 Owner: abigael Size: 2,4MB (configured size allowed: 1,0MB)
[11:13:02] Process: /usr/bin/xfce4-terminal PID: 30209 Owner: abigael Size: 4,0MB (configured size allowed: 1,0MB)
False positive or not?