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-rw-r--r--security/selinux/hooks.c14
-rw-r--r--security/selinux/include/classmap.h28
2 files changed, 25 insertions, 17 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 474011c46bbd..bbff80c6d3f2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1631,7 +1631,7 @@ static int current_has_perm(const struct task_struct *tsk,
/* Check whether a task is allowed to use a capability. */
static int cred_has_capability(const struct cred *cred,
- int cap, int audit)
+ int cap, int audit, bool initns)
{
struct common_audit_data ad;
struct av_decision avd;
@@ -1645,10 +1645,10 @@ static int cred_has_capability(const struct cred *cred,
switch (CAP_TO_INDEX(cap)) {
case 0:
- sclass = SECCLASS_CAPABILITY;
+ sclass = initns ? SECCLASS_CAPABILITY : SECCLASS_CAP_USERNS;
break;
case 1:
- sclass = SECCLASS_CAPABILITY2;
+ sclass = initns ? SECCLASS_CAPABILITY2 : SECCLASS_CAP2_USERNS;
break;
default:
printk(KERN_ERR
@@ -2152,7 +2152,7 @@ static int selinux_capset(struct cred *new, const struct cred *old,
static int selinux_capable(const struct cred *cred, struct user_namespace *ns,
int cap, int audit)
{
- return cred_has_capability(cred, cap, audit);
+ return cred_has_capability(cred, cap, audit, ns == &init_user_ns);
}
static int selinux_quotactl(int cmds, int type, int id, struct super_block *sb)
@@ -2230,7 +2230,7 @@ static int selinux_vm_enough_memory(struct mm_struct *mm, long pages)
int rc, cap_sys_admin = 0;
rc = cred_has_capability(current_cred(), CAP_SYS_ADMIN,
- SECURITY_CAP_NOAUDIT);
+ SECURITY_CAP_NOAUDIT, true);
if (rc == 0)
cap_sys_admin = 1;
@@ -3213,7 +3213,7 @@ static int selinux_inode_getsecurity(struct inode *inode, const char *name, void
SECURITY_CAP_NOAUDIT);
if (!error)
error = cred_has_capability(current_cred(), CAP_MAC_ADMIN,
- SECURITY_CAP_NOAUDIT);
+ SECURITY_CAP_NOAUDIT, true);
isec = inode_security(inode);
if (!error)
error = security_sid_to_context_force(isec->sid, &context,
@@ -3390,7 +3390,7 @@ static int selinux_file_ioctl(struct file *file, unsigned int cmd,
case KDSKBENT:
case KDSKBSENT:
error = cred_has_capability(cred, CAP_SYS_TTY_CONFIG,
- SECURITY_CAP_AUDIT);
+ SECURITY_CAP_AUDIT, true);
break;
/* default case assumes that the command will go
diff --git a/security/selinux/include/classmap.h b/security/selinux/include/classmap.h
index 8fbd1383d75e..1f1f4b2f6018 100644
--- a/security/selinux/include/classmap.h
+++ b/security/selinux/include/classmap.h
@@ -12,6 +12,18 @@
#define COMMON_IPC_PERMS "create", "destroy", "getattr", "setattr", "read", \
"write", "associate", "unix_read", "unix_write"
+#define COMMON_CAP_PERMS "chown", "dac_override", "dac_read_search", \
+ "fowner", "fsetid", "kill", "setgid", "setuid", "setpcap", \
+ "linux_immutable", "net_bind_service", "net_broadcast", \
+ "net_admin", "net_raw", "ipc_lock", "ipc_owner", "sys_module", \
+ "sys_rawio", "sys_chroot", "sys_ptrace", "sys_pacct", "sys_admin", \
+ "sys_boot", "sys_nice", "sys_resource", "sys_time", \
+ "sys_tty_config", "mknod", "lease", "audit_write", \
+ "audit_control", "setfcap"
+
+#define COMMON_CAP2_PERMS "mac_override", "mac_admin", "syslog", \
+ "wake_alarm", "block_suspend", "audit_read"
+
/*
* Note: The name for any socket class should be suffixed by "socket",
* and doesn't contain more than one substr of "socket".
@@ -34,14 +46,7 @@ struct security_class_mapping secclass_map[] = {
{ "ipc_info", "syslog_read", "syslog_mod",
"syslog_console", "module_request", "module_load", NULL } },
{ "capability",
- { "chown", "dac_override", "dac_read_search",
- "fowner", "fsetid", "kill", "setgid", "setuid", "setpcap",
- "linux_immutable", "net_bind_service", "net_broadcast",
- "net_admin", "net_raw", "ipc_lock", "ipc_owner", "sys_module",
- "sys_rawio", "sys_chroot", "sys_ptrace", "sys_pacct", "sys_admin",
- "sys_boot", "sys_nice", "sys_resource", "sys_time",
- "sys_tty_config", "mknod", "lease", "audit_write",
- "audit_control", "setfcap", NULL } },
+ { COMMON_CAP_PERMS, NULL } },
{ "filesystem",
{ "mount", "remount", "unmount", "getattr",
"relabelfrom", "relabelto", "associate", "quotamod",
@@ -150,12 +155,15 @@ struct security_class_mapping secclass_map[] = {
{ "memprotect", { "mmap_zero", NULL } },
{ "peer", { "recv", NULL } },
{ "capability2",
- { "mac_override", "mac_admin", "syslog", "wake_alarm", "block_suspend",
- "audit_read", NULL } },
+ { COMMON_CAP2_PERMS, NULL } },
{ "kernel_service", { "use_as_override", "create_files_as", NULL } },
{ "tun_socket",
{ COMMON_SOCK_PERMS, "attach_queue", NULL } },
{ "binder", { "impersonate", "call", "set_context_mgr", "transfer",
NULL } },
+ { "cap_userns",
+ { COMMON_CAP_PERMS, NULL } },
+ { "cap2_userns",
+ { COMMON_CAP2_PERMS, NULL } },
{ NULL }
};