Capability Key

Capability Description

SETPCAP

Modify process capabilities.

MKNOD

Create special files using mknod(2).

AUDIT_WRITE

Write records to kernel auditing log.

CHOWN

Make arbitrary changes to file UIDs and GIDs (see chown(2)).

NET_RAW

Use RAW and PACKET sockets.

DAC_OVERRIDE

Bypass file read, write, and execute permission checks.

FOWNER

Bypass permission checks on operations that normally require

the file system UID of the process to match the UID of the file.

FSETID

Don’t clear set-user-ID and set-group-ID permission bits

when a file is modified.

KILL

Bypass permission checks for sending signals.

SETGID

Make arbitrary manipulations of process GIDs and supplementary

GID list.

SETUID

Make arbitrary manipulations of process UIDs.

NET_BIND_SERVICE

Bind a socket to internet domain privileged ports

(port numbers less than 1024).

SYS_CHROOT

Use chroot(2), change root directory.

SETFCAP

Set file capabilities.

Capability Key

Capability Description

SYS_MODULE

Load and unload kernel modules.

SYS_RAWIO

Perform I/O port operations (iopl(2) and ioperm(2)).

SYS_PACCT

Use acct(2), switch process accounting on or off.

SYS_ADMIN

Perform a range of system administration operations.

SYS_NICE

Raise process nice value (nice(2), setpriority(2)) and

change the nice value for arbitrary processes.

SYS_RESOURCE

Override resource Limits.

SYS_TIME

Set system clock (settimeofday(2), stime(2), adjtimex(2));

set real-time (hardware) clock.

SYS_TTY_CONFIG

Use vhangup(2); employ various privileged ioctl(2) operations

on virtual terminals.

AUDIT_CONTROL

Enable and disable kernel auditing; change auditing filter rules;

retrieve auditing status and filtering rules.

MAC_OVERRIDE

Allow MAC configuration or state changes.

Implemented for the Smack LSM.

MAC_ADMIN

Override Mandatory Access Control (MAC). Implemented for

 the Smack Linux Security Module (LSM).

NET_ADMIN

Perform various network-related operations.

SYSLOG

Perform privileged syslog(2) operations.

DAC_READ_SEARCH

Bypass file read permission checks and directory read and

execute permission checks.

LINUX_IMMUTABLE

Set the FS_APPEND_FL and FS_IMMUTABLE_FL i-node flags.

NET_BROADCAST

Make socket broadcasts, and listen to multicasts.

IPC_LOCK

Lock memory (mlock(2), mlockall(2), mmap(2), shmctl(2)).

IPC_OWNER

Bypass permission checks for operations on System V IPC objects.

SYS_PTRACE

Trace arbitrary processes using ptrace(2).

SYS_BOOT

Use reboot(2) and kexec_load(2), reboot and load a new kernel

for later execution.

LEASE

Establish leases on arbitrary files (see fcntl(2)).

WAKE_ALARM

Trigger something that will wake up the system.

BLOCK_SUSPEND

Employ features that can block system suspend.