1 files changed, 199 insertions, 193 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 5b6895e4fc29..f553c370397e 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -25,7 +25,6 @@
 #include <linux/kd.h>
 #include <linux/kernel.h>
 #include <linux/kernel_read_file.h>
-#include <linux/tracehook.h>
 #include <linux/errno.h>
 #include <linux/sched/signal.h>
 #include <linux/sched/task.h>
@@ -92,6 +91,7 @@
 #include <uapi/linux/mount.h>
 #include <linux/fsnotify.h>
 #include <linux/fanotify.h>
+#include <linux/io_uring.h>
 
 #include "avc.h"
 #include "objsec.h"
@@ -146,7 +146,7 @@ static int __init checkreqprot_setup(char *str)
 	if (!kstrtoul(str, 0, &checkreqprot)) {
 		selinux_checkreqprot_boot = checkreqprot ? 1 : 0;
 		if (checkreqprot)
-			pr_warn("SELinux: checkreqprot set to 1 via kernel parameter.  This is deprecated and will be rejected in a future kernel release.\n");
+			pr_err("SELinux: checkreqprot set to 1 via kernel parameter.  This is deprecated and will be rejected in a future kernel release.\n");
 	}
 	return 1;
 }
@@ -211,10 +211,9 @@ static int selinux_lsm_notifier_avc_callback(u32 event)
  */
 static void cred_init_security(void)
 {
-	struct cred *cred = (struct cred *) current->real_cred;
 	struct task_security_struct *tsec;
 
-	tsec = selinux_cred(cred);
+	tsec = selinux_cred(unrcu_pointer(current->real_cred));
 	tsec->osid = tsec->sid = SECINITSID_KERNEL;
 }
 
@@ -341,17 +340,15 @@ static void inode_free_security(struct inode *inode)
 }
 
 struct selinux_mnt_opts {
-	const char *fscontext, *context, *rootcontext, *defcontext;
+	u32 fscontext_sid;
+	u32 context_sid;
+	u32 rootcontext_sid;
+	u32 defcontext_sid;
 };
 
 static void selinux_free_mnt_opts(void *mnt_opts)
 {
-	struct selinux_mnt_opts *opts = mnt_opts;
-	kfree(opts->fscontext);
-	kfree(opts->context);
-	kfree(opts->rootcontext);
-	kfree(opts->defcontext);
-	kfree(opts);
+	kfree(mnt_opts);
 }
 
 enum {
@@ -479,7 +476,7 @@ static int selinux_is_sblabel_mnt(struct super_block *sb)
 
 static int sb_check_xattr_support(struct super_block *sb)
 {
-	struct superblock_security_struct *sbsec = sb->s_security;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 	struct dentry *root = sb->s_root;
 	struct inode *root_inode = d_backing_inode(root);
 	u32 sid;
@@ -598,18 +595,6 @@ static int bad_option(struct superblock_security_struct *sbsec, char flag,
 	return 0;
 }
 
-static int parse_sid(struct super_block *sb, const char *s, u32 *sid,
-		     gfp_t gfp)
-{
-	int rc = security_context_str_to_sid(&selinux_state, s,
-					     sid, gfp);
-	if (rc)
-		pr_warn("SELinux: security_context_str_to_sid"
-		       "(%s) failed for (dev %s, type %s) errno=%d\n",
-		       s, sb->s_id, sb->s_type->name, rc);
-	return rc;
-}
-
 /*
  * Allow filesystems with binary mount data to explicitly set mount point
  * labeling information.
@@ -656,7 +641,7 @@ static int selinux_set_mnt_opts(struct super_block *sb,
 	 * we need to skip the double mount verification.
 	 *
 	 * This does open a hole in which we will not notice if the first
-	 * mount using this sb set explict options and a second mount using
+	 * mount using this sb set explicit options and a second mount using
 	 * this sb does not set any security options.  (The first options
 	 * will be used for both mounts)
 	 */
@@ -672,41 +657,29 @@ static int selinux_set_mnt_opts(struct super_block *sb,
 	 * than once with different security options.
 	 */
 	if (opts) {
-		if (opts->fscontext) {
-			rc = parse_sid(sb, opts->fscontext, &fscontext_sid,
-					GFP_KERNEL);
-			if (rc)
-				goto out;
+		if (opts->fscontext_sid) {
+			fscontext_sid = opts->fscontext_sid;
 			if (bad_option(sbsec, FSCONTEXT_MNT, sbsec->sid,
 					fscontext_sid))
 				goto out_double_mount;
 			sbsec->flags |= FSCONTEXT_MNT;
 		}
-		if (opts->context) {
-			rc = parse_sid(sb, opts->context, &context_sid,
-					GFP_KERNEL);
-			if (rc)
-				goto out;
+		if (opts->context_sid) {
+			context_sid = opts->context_sid;
 			if (bad_option(sbsec, CONTEXT_MNT, sbsec->mntpoint_sid,
 					context_sid))
 				goto out_double_mount;
 			sbsec->flags |= CONTEXT_MNT;
 		}
-		if (opts->rootcontext) {
-			rc = parse_sid(sb, opts->rootcontext, &rootcontext_sid,
-					GFP_KERNEL);
-			if (rc)
-				goto out;
+		if (opts->rootcontext_sid) {
+			rootcontext_sid = opts->rootcontext_sid;
 			if (bad_option(sbsec, ROOTCONTEXT_MNT, root_isec->sid,
 					rootcontext_sid))
 				goto out_double_mount;
 			sbsec->flags |= ROOTCONTEXT_MNT;
 		}
-		if (opts->defcontext) {
-			rc = parse_sid(sb, opts->defcontext, &defcontext_sid,
-					GFP_KERNEL);
-			if (rc)
-				goto out;
+		if (opts->defcontext_sid) {
+			defcontext_sid = opts->defcontext_sid;
 			if (bad_option(sbsec, DEFCONTEXT_MNT, sbsec->def_sid,
 					defcontext_sid))
 				goto out_double_mount;
@@ -972,55 +945,65 @@ out:
 	return rc;
 }
 
+/*
+ * NOTE: the caller is resposible for freeing the memory even if on error.
+ */
 static int selinux_add_opt(int token, const char *s, void **mnt_opts)
 {
 	struct selinux_mnt_opts *opts = *mnt_opts;
-	bool is_alloc_opts = false;
+	u32 *dst_sid;
+	int rc;
 
 	if (token == Opt_seclabel)
 		/* eaten and completely ignored */
 		return 0;
 	if (!s)
-		return -ENOMEM;
+		return -EINVAL;
+
+	if (!selinux_initialized(&selinux_state)) {
+		pr_warn("SELinux: Unable to set superblock options before the security server is initialized\n");
+		return -EINVAL;
+	}
 
 	if (!opts) {
 		opts = kzalloc(sizeof(*opts), GFP_KERNEL);
 		if (!opts)
 			return -ENOMEM;
 		*mnt_opts = opts;
-		is_alloc_opts = true;
 	}
 
 	switch (token) {
 	case Opt_context:
-		if (opts->context || opts->defcontext)
+		if (opts->context_sid || opts->defcontext_sid)
 			goto err;
-		opts->context = s;
+		dst_sid = &opts->context_sid;
 		break;
 	case Opt_fscontext:
-		if (opts->fscontext)
+		if (opts->fscontext_sid)
 			goto err;
-		opts->fscontext = s;
+		dst_sid = &opts->fscontext_sid;
 		break;
 	case Opt_rootcontext:
-		if (opts->rootcontext)
+		if (opts->rootcontext_sid)
 			goto err;
-		opts->rootcontext = s;
+		dst_sid = &opts->rootcontext_sid;
 		break;
 	case Opt_defcontext:
-		if (opts->context || opts->defcontext)
+		if (opts->context_sid || opts->defcontext_sid)
 			goto err;
-		opts->defcontext = s;
+		dst_sid = &opts->defcontext_sid;
 		break;
+	default:
+		WARN_ON(1);
+		return -EINVAL;
 	}
-
-	return 0;
+	rc = security_context_str_to_sid(&selinux_state, s, dst_sid, GFP_KERNEL);
+	if (rc)
+		pr_warn("SELinux: security_context_str_to_sid (%s) failed with errno=%d\n",
+			s, rc);
+	return rc;
 
 err:
-	if (is_alloc_opts) {
-		kfree(opts);
-		*mnt_opts = NULL;
-	}
 	pr_warn(SEL_MOUNT_FAIL_MSG);
 	return -EINVAL;
 }
@@ -1034,7 +1017,7 @@ static int show_sid(struct seq_file *m, u32 sid)
 	rc = security_sid_to_context(&selinux_state, sid,
 					     &context, &len);
 	if (!rc) {
-		bool has_comma = context && strchr(context, ',');
+		bool has_comma = strchr(context, ',');
 
 		seq_putc(m, '=');
 		if (has_comma)
@@ -2535,7 +2518,7 @@ static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
 	if (rc) {
 		clear_itimer();
 
-		spin_lock_irq(&current->sighand->siglock);
+		spin_lock_irq(&unrcu_pointer(current->sighand)->siglock);
 		if (!fatal_signal_pending(current)) {
 			flush_sigqueue(&current->pending);
 			flush_sigqueue(&current->signal->shared_pending);
@@ -2543,13 +2526,13 @@ static void selinux_bprm_committed_creds(struct linux_binprm *bprm)
 			sigemptyset(&current->blocked);
 			recalc_sigpending();
 		}
-		spin_unlock_irq(&current->sighand->siglock);
+		spin_unlock_irq(&unrcu_pointer(current->sighand)->siglock);
 	}
 
 	/* Wake up the parent if it is waiting so that it can recheck
 	 * wait permission to the new task SID. */
 	read_lock(&tasklist_lock);
-	__wake_up_parent(current, current->real_parent);
+	__wake_up_parent(current, unrcu_pointer(current->real_parent));
 	read_unlock(&tasklist_lock);
 }
 
@@ -2615,8 +2598,9 @@ static int selinux_sb_eat_lsm_opts(char *options, void **mnt_opts)
 				}
 			}
 			rc = selinux_add_opt(token, arg, mnt_opts);
+			kfree(arg);
+			arg = NULL;
 			if (unlikely(rc)) {
-				kfree(arg);
 				goto free_opt;
 			}
 		} else {
@@ -2647,9 +2631,7 @@ free_opt:
 static int selinux_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts)
 {
 	struct selinux_mnt_opts *opts = mnt_opts;
-	struct superblock_security_struct *sbsec = sb->s_security;
-	u32 sid;
-	int rc;
+	struct superblock_security_struct *sbsec = selinux_superblock(sb);
 
 	/*
 	 * Superblock not initialized (i.e. no options) - reject if any
@@ -2665,35 +2647,27 @@ static int selinux_sb_mnt_opts_compat(struct super_block *sb, void *mnt_opts)
 	if (!opts)
 		return (sbsec->flags & SE_MNTMASK) ? 1 : 0;
 
-	if (opts->fscontext) {
-		rc = parse_sid(sb, opts->fscontext, &sid, GFP_NOWAIT);
-		if (rc)
-			return 1;
-		if (bad_option(sbsec, FSCONTEXT_MNT, sbsec->sid, sid))
+	if (opts->fscontext_sid) {
+		if (bad_option(sbsec, FSCONTEXT_MNT, sbsec->sid,
+			       opts->fscontext_sid))
 			return 1;
 	}
-	if (opts->context) {
-		rc = parse_sid(sb, opts->context, &sid, GFP_NOWAIT);
-		if (rc)
-			return 1;
-		if (bad_option(sbsec, CONTEXT_MNT, sbsec->mntpoint_sid, sid))
+	if (opts->context_sid) {
+		if (bad_option(sbsec, CONTEXT_MNT, sbsec->mntpoint_sid,
+			       opts->context_sid))
 			return 1;
 	}
-	if (opts->rootcontext) {
+	if (opts->rootcontext_sid) {
 		struct inode_security_struct *root_isec;
 
 		root_isec = backing_inode_security(sb->s_root);
-		rc = parse_sid(sb, opts->rootcontext, &sid, GFP_NOWAIT);
-		if (rc)
-			return 1;
-		if (bad_option(sbsec, ROOTCONTEXT_MNT, root_isec->sid, sid))
+		if (bad_option(sbsec, ROOTCONTEXT_MNT, root_isec->sid,
+			       opts->rootcontext_sid))
 			return 1;
 	}
-	if (opts->defcontext) {
-		rc = parse_sid(sb, opts->defcontext, &sid, GFP_NOWAIT);
-		if (rc)
-			return 1;
-		if (bad_option(sbsec, DEFCONTEXT_MNT, sbsec->def_sid, sid))
+	if (opts->defcontext_sid) {
+		if (bad_option(sbsec, DEFCONTEXT_MNT, sbsec->def_sid,
+			       opts->defcontext_sid))
 			return 1;
 	}
 	return 0;
@@ -2703,8 +2677,6 @@ static int selinux_sb_remount(struct super_block *sb, void *mnt_opts)
 {
 	struct selinux_mnt_opts *opts = mnt_opts;
 	struct superblock_security_struct *sbsec = selinux_superblock(sb);
-	u32 sid;
-	int rc;
 
 	if (!(sbsec->flags & SE_SBINITIALIZED))
 		return 0;
@@ -2712,34 +2684,26 @@ static int selinux_sb_remount(struct super_block *sb, void *mnt_opts)
 	if (!opts)
 		return 0;
 
-	if (opts->fscontext) {
-		rc = parse_sid(sb, opts->fscontext, &sid, GFP_KERNEL);
-		if (rc)
-			return rc;
-		if (bad_option(sbsec, FSCONTEXT_MNT, sbsec->sid, sid))
+	if (opts->fscontext_sid) {
+		if (bad_option(sbsec, FSCONTEXT_MNT, sbsec->sid,
+			       opts->fscontext_sid))
 			goto out_bad_option;
 	}
-	if (opts->context) {
-		rc = parse_sid(sb, opts->context, &sid, GFP_KERNEL);
-		if (rc)
-			return rc;
-		if (bad_option(sbsec, CONTEXT_MNT, sbsec->mntpoint_sid, sid))
+	if (opts->context_sid) {
+		if (bad_option(sbsec, CONTEXT_MNT, sbsec->mntpoint_sid,
+			       opts->context_sid))
 			goto out_bad_option;
 	}
-	if (opts->rootcontext) {
+	if (opts->rootcontext_sid) {
 		struct inode_security_struct *root_isec;
 		root_isec = backing_inode_security(sb->s_root);
-		rc = parse_sid(sb, opts->rootcontext, &sid, GFP_KERNEL);
-		if (rc)
-			return rc;
-		if (bad_option(sbsec, ROOTCONTEXT_MNT, root_isec->sid, sid))
+		if (bad_option(sbsec, ROOTCONTEXT_MNT, root_isec->sid,
+			       opts->rootcontext_sid))
 			goto out_bad_option;
 	}
-	if (opts->defcontext) {
-		rc = parse_sid(sb, opts->defcontext, &sid, GFP_KERNEL);
-		if (rc)
-			return rc;
-		if (bad_option(sbsec, DEFCONTEXT_MNT, sbsec->def_sid, sid))
+	if (opts->defcontext_sid) {
+		if (bad_option(sbsec, DEFCONTEXT_MNT, sbsec->def_sid,
+			       opts->defcontext_sid))
 			goto out_bad_option;
 	}
 	return 0;
@@ -2806,38 +2770,12 @@ static int selinux_fs_context_dup(struct fs_context *fc,
 				  struct fs_context *src_fc)
 {
 	const struct selinux_mnt_opts *src = src_fc->security;
-	struct selinux_mnt_opts *opts;
 
 	if (!src)
 		return 0;
 
-	fc->security = kzalloc(sizeof(struct selinux_mnt_opts), GFP_KERNEL);
-	if (!fc->security)
-		return -ENOMEM;
-
-	opts = fc->security;
-
-	if (src->fscontext) {
-		opts->fscontext = kstrdup(src->fscontext, GFP_KERNEL);
-		if (!opts->fscontext)
-			return -ENOMEM;
-	}
-	if (src->context) {
-		opts->context = kstrdup(src->context, GFP_KERNEL);
-		if (!opts->context)
-			return -ENOMEM;
-	}
-	if (src->rootcontext) {
-		opts->rootcontext = kstrdup(src->rootcontext, GFP_KERNEL);
-		if (!opts->rootcontext)
-			return -ENOMEM;
-	}
-	if (src->defcontext) {
-		opts->defcontext = kstrdup(src->defcontext, GFP_KERNEL);
-		if (!opts->defcontext)
-			return -ENOMEM;
-	}
-	return 0;
+	fc->security = kmemdup(src, sizeof(*src), GFP_KERNEL);
+	return fc->security ? 0 : -ENOMEM;
 }
 
 static const struct fs_parameter_spec selinux_fs_parameters[] = {
@@ -2853,18 +2791,13 @@ static int selinux_fs_context_parse_param(struct fs_context *fc,
 					  struct fs_parameter *param)
 {
 	struct fs_parse_result result;
-	int opt, rc;
+	int opt;
 
 	opt = fs_parse(fc, selinux_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
-	rc = selinux_add_opt(opt, param->string, &fc->security);
-	if (!rc) {
-		param->string = NULL;
-		rc = 1;
-	}
-	return rc;
+	return selinux_add_opt(opt, param->string, &fc->security);
 }
 
 /* inode security operations */
@@ -3026,8 +2959,8 @@ static int selinux_inode_init_security_anon(struct inode *inode,
 	 * allowed to actually create this type of anonymous inode.
 	 */
 
-	ad.type = LSM_AUDIT_DATA_INODE;
-	ad.u.inode = inode;
+	ad.type = LSM_AUDIT_DATA_ANONINODE;
+	ad.u.anonclass = name ? (const char *)name->name : "?";
 
 	return avc_has_perm(&selinux_state,
 			    tsec->sid,
@@ -3345,8 +3278,6 @@ static void selinux_inode_post_setxattr(struct dentry *dentry, const char *name,
 	isec->sid = newsid;
 	isec->initialized = LABEL_INITIALIZED;
 	spin_unlock(&isec->lock);
-
-	return;
 }
 
 static int selinux_inode_getxattr(struct dentry *dentry, const char *name)
@@ -3745,6 +3676,12 @@ static int selinux_file_ioctl(struct file *file, unsigned int cmd,
 					    CAP_OPT_NONE, true);
 		break;
 
+	case FIOCLEX:
+	case FIONCLEX:
+		if (!selinux_policycap_ioctl_skip_cloexec())
+			error = ioctl_has_perm(cred, file, FILE__IOCTL, (u16) cmd);
+		break;
+
 	/* default case assumes that the command will go
 	 * to the file's ioctl() function.
 	 */
@@ -4285,6 +4222,14 @@ static void selinux_task_to_inode(struct task_struct *p,
 	spin_unlock(&isec->lock);
 }
 
+static int selinux_userns_create(const struct cred *cred)
+{
+	u32 sid = current_sid();
+
+	return avc_has_perm(&selinux_state, sid, sid, SECCLASS_USER_NAMESPACE,
+						USER_NAMESPACE__CREATE, NULL);
+}
+
 /* Returns error only if unable to parse addresses */
 static int selinux_parse_skb_ipv4(struct sk_buff *skb,
 			struct common_audit_data *ad, u8 *proto)
@@ -5299,37 +5244,38 @@ static void selinux_sock_graft(struct sock *sk, struct socket *parent)
 	sksec->sclass = isec->sclass;
 }
 
-/* Called whenever SCTP receives an INIT chunk. This happens when an incoming
- * connect(2), sctp_connectx(3) or sctp_sendmsg(3) (with no association
- * already present).
+/*
+ * Determines peer_secid for the asoc and updates socket's peer label
+ * if it's the first association on the socket.
  */
-static int selinux_sctp_assoc_request(struct sctp_association *asoc,
-				      struct sk_buff *skb)
+static int selinux_sctp_process_new_assoc(struct sctp_association *asoc,
+					  struct sk_buff *skb)
 {
-	struct sk_security_struct *sksec = asoc->base.sk->sk_security;
+	struct sock *sk = asoc->base.sk;
+	u16 family = sk->sk_family;
+	struct sk_security_struct *sksec = sk->sk_security;
 	struct common_audit_data ad;
 	struct lsm_network_audit net = {0,};
-	u8 peerlbl_active;
-	u32 peer_sid = SECINITSID_UNLABELED;
-	u32 conn_sid;
-	int err = 0;
+	int err;
 
-	if (!selinux_policycap_extsockclass())
-		return 0;
+	/* handle mapped IPv4 packets arriving via IPv6 sockets */
+	if (family == PF_INET6 && skb->protocol == htons(ETH_P_IP))
+		family = PF_INET;
 
-	peerlbl_active = selinux_peerlbl_enabled();
+	if (selinux_peerlbl_enabled()) {
+		asoc->peer_secid = SECSID_NULL;
 
-	if (peerlbl_active) {
 		/* This will return peer_sid = SECSID_NULL if there are
 		 * no peer labels, see security_net_peersid_resolve().
 		 */
-		err = selinux_skb_peerlbl_sid(skb, asoc->base.sk->sk_family,
-					      &peer_sid);
+		err = selinux_skb_peerlbl_sid(skb, family, &asoc->peer_secid);
 		if (err)
 			return err;
 
-		if (peer_sid == SECSID_NULL)
-			peer_sid = SECINITSID_UNLABELED;
+		if (asoc->peer_secid == SECSID_NULL)
+			asoc->peer_secid = SECINITSID_UNLABELED;
+	} else {
+		asoc->peer_secid = SECINITSID_UNLABELED;
 	}
 
 	if (sksec->sctp_assoc_state == SCTP_ASSOC_UNSET) {
@@ -5340,8 +5286,8 @@ static int selinux_sctp_assoc_request(struct sctp_association *asoc,
 		 * then it is approved by policy and used as the primary
 		 * peer SID for getpeercon(3).
 		 */
-		sksec->peer_sid = peer_sid;
-	} else if  (sksec->peer_sid != peer_sid) {
+		sksec->peer_sid = asoc->peer_secid;
+	} else if (sksec->peer_sid != asoc->peer_secid) {
 		/* Other association peer SIDs are checked to enforce
 		 * consistency among the peer SIDs.
 		 */
@@ -5349,11 +5295,32 @@ static int selinux_sctp_assoc_request(struct sctp_association *asoc,
 		ad.u.net = &net;
 		ad.u.net->sk = asoc->base.sk;
 		err = avc_has_perm(&selinux_state,
-				   sksec->peer_sid, peer_sid, sksec->sclass,
-				   SCTP_SOCKET__ASSOCIATION, &ad);
+				   sksec->peer_sid, asoc->peer_secid,
+				   sksec->sclass, SCTP_SOCKET__ASSOCIATION,
+				   &ad);
 		if (err)
 			return err;
 	}
+	return 0;
+}
+
+/* Called whenever SCTP receives an INIT or COOKIE ECHO chunk. This
+ * happens on an incoming connect(2), sctp_connectx(3) or
+ * sctp_sendmsg(3) (with no association already present).
+ */
+static int selinux_sctp_assoc_request(struct sctp_association *asoc,
+				      struct sk_buff *skb)
+{
+	struct sk_security_struct *sksec = asoc->base.sk->sk_security;
+	u32 conn_sid;
+	int err;
+
+	if (!selinux_policycap_extsockclass())
+		return 0;
+
+	err = selinux_sctp_process_new_assoc(asoc, skb);
+	if (err)
+		return err;
 
 	/* Compute the MLS component for the connection and store
 	 * the information in asoc. This will be used by SCTP TCP type
@@ -5361,17 +5328,36 @@ static int selinux_sctp_assoc_request(struct sctp_association *asoc,
 	 * socket to be generated. selinux_sctp_sk_clone() will then
 	 * plug this into the new socket.
 	 */
-	err = selinux_conn_sid(sksec->sid, peer_sid, &conn_sid);
+	err = selinux_conn_sid(sksec->sid, asoc->peer_secid, &conn_sid);
 	if (err)
 		return err;
 
 	asoc->secid = conn_sid;
-	asoc->peer_secid = peer_sid;
 
 	/* Set any NetLabel labels including CIPSO/CALIPSO options. */
 	return selinux_netlbl_sctp_assoc_request(asoc, skb);
 }
 
+/* Called when SCTP receives a COOKIE ACK chunk as the final
+ * response to an association request (initited by us).
+ */
+static int selinux_sctp_assoc_established(struct sctp_association *asoc,
+					  struct sk_buff *skb)
+{
+	struct sk_security_struct *sksec = asoc->base.sk->sk_security;
+
+	if (!selinux_policycap_extsockclass())
+		return 0;
+
+	/* Inherit secid from the parent socket - this will be picked up
+	 * by selinux_sctp_sk_clone() if the association gets peeled off
+	 * into a new socket.
+	 */
+	asoc->secid = sksec->sid;
+
+	return selinux_sctp_process_new_assoc(asoc, skb);
+}
+
 /* Check if sctp IPv4/IPv6 addresses are valid for binding or connecting
  * based on their @optname.
  */
@@ -6009,7 +5995,6 @@ static int selinux_msg_queue_alloc_security(struct kern_ipc_perm *msq)
 	struct ipc_security_struct *isec;
 	struct common_audit_data ad;
 	u32 sid = current_sid();
-	int rc;
 
 	isec = selinux_ipc(msq);
 	ipc_init_security(isec, SECCLASS_MSGQ);
@@ -6017,10 +6002,9 @@ static int selinux_msg_queue_alloc_security(struct kern_ipc_perm *msq)
 	ad.type = LSM_AUDIT_DATA_IPC;
 	ad.u.ipc_id = msq->key;
 
-	rc = avc_has_perm(&selinux_state,
-			  sid, isec->sid, SECCLASS_MSGQ,
-			  MSGQ__CREATE, &ad);
-	return rc;
+	return avc_has_perm(&selinux_state,
+			    sid, isec->sid, SECCLASS_MSGQ,
+			    MSGQ__CREATE, &ad);
 }
 
 static int selinux_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
@@ -6148,7 +6132,6 @@ static int selinux_shm_alloc_security(struct kern_ipc_perm *shp)
 	struct ipc_security_struct *isec;
 	struct common_audit_data ad;
 	u32 sid = current_sid();
-	int rc;
 
 	isec = selinux_ipc(shp);
 	ipc_init_security(isec, SECCLASS_SHM);
@@ -6156,10 +6139,9 @@ static int selinux_shm_alloc_security(struct kern_ipc_perm *shp)
 	ad.type = LSM_AUDIT_DATA_IPC;
 	ad.u.ipc_id = shp->key;
 
-	rc = avc_has_perm(&selinux_state,
-			  sid, isec->sid, SECCLASS_SHM,
-			  SHM__CREATE, &ad);
-	return rc;
+	return avc_has_perm(&selinux_state,
+			    sid, isec->sid, SECCLASS_SHM,
+			    SHM__CREATE, &ad);
 }
 
 static int selinux_shm_associate(struct kern_ipc_perm *shp, int shmflg)
@@ -6233,7 +6215,6 @@ static int selinux_sem_alloc_security(struct kern_ipc_perm *sma)
 	struct ipc_security_struct *isec;
 	struct common_audit_data ad;
 	u32 sid = current_sid();
-	int rc;
 
 	isec = selinux_ipc(sma);
 	ipc_init_security(isec, SECCLASS_SEM);
@@ -6241,10 +6222,9 @@ static int selinux_sem_alloc_security(struct kern_ipc_perm *sma)
 	ad.type = LSM_AUDIT_DATA_IPC;
 	ad.u.ipc_id = sma->key;
 
-	rc = avc_has_perm(&selinux_state,
-			  sid, isec->sid, SECCLASS_SEM,
-			  SEM__CREATE, &ad);
-	return rc;
+	return avc_has_perm(&selinux_state,
+			    sid, isec->sid, SECCLASS_SEM,
+			    SEM__CREATE, &ad);
 }
 
 static int selinux_sem_associate(struct kern_ipc_perm *sma, int semflg)
@@ -6350,7 +6330,7 @@ static void selinux_d_instantiate(struct dentry *dentry, struct inode *inode)
 }
 
 static int selinux_getprocattr(struct task_struct *p,
-			       char *name, char **value)
+			       const char *name, char **value)
 {
 	const struct task_security_struct *__tsec;
 	u32 sid;
@@ -6504,7 +6484,6 @@ static int selinux_setprocattr(const char *name, void *value, size_t size)
 			goto abort_change;
 
 		/* Only allow single threaded processes to change context */
-		error = -EPERM;
 		if (!current_is_single_threaded()) {
 			error = security_bounded_transition(&selinux_state,
 							    tsec->sid, sid);
@@ -6813,7 +6792,7 @@ static u32 bpf_map_fmode_to_av(fmode_t fmode)
 }
 
 /* This function will check the file pass through unix socket or binder to see
- * if it is a bpf related object. And apply correspinding checks on the bpf
+ * if it is a bpf related object. And apply corresponding checks on the bpf
  * object based on the type. The bpf maps and programs, not like other files and
  * socket, are using a shared anonymous inode inside the kernel as their inode.
  * So checking that inode cannot identify if the process have privilege to
@@ -7011,6 +6990,28 @@ static int selinux_uring_sqpoll(void)
 	return avc_has_perm(&selinux_state, sid, sid,
 			    SECCLASS_IO_URING, IO_URING__SQPOLL, NULL);
 }
+
+/**
+ * selinux_uring_cmd - check if IORING_OP_URING_CMD is allowed
+ * @ioucmd: the io_uring command structure
+ *
+ * Check to see if the current domain is allowed to execute an
+ * IORING_OP_URING_CMD against the device/file specified in @ioucmd.
+ *
+ */
+static int selinux_uring_cmd(struct io_uring_cmd *ioucmd)
+{
+	struct file *file = ioucmd->file;
+	struct inode *inode = file_inode(file);
+	struct inode_security_struct *isec = selinux_inode(inode);
+	struct common_audit_data ad;
+
+	ad.type = LSM_AUDIT_DATA_FILE;
+	ad.u.file = file;
+
+	return avc_has_perm(&selinux_state, current_sid(), isec->sid,
+			    SECCLASS_IO_URING, IO_URING__CMD, &ad);
+}
 #endif /* CONFIG_IO_URING */
 
 /*
@@ -7135,6 +7136,7 @@ static struct security_hook_list selinux_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(task_movememory, selinux_task_movememory),
 	LSM_HOOK_INIT(task_kill, selinux_task_kill),
 	LSM_HOOK_INIT(task_to_inode, selinux_task_to_inode),
+	LSM_HOOK_INIT(userns_create, selinux_userns_create),
 
 	LSM_HOOK_INIT(ipc_permission, selinux_ipc_permission),
 	LSM_HOOK_INIT(ipc_getsecid, selinux_ipc_getsecid),
@@ -7192,6 +7194,7 @@ static struct security_hook_list selinux_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(sctp_assoc_request, selinux_sctp_assoc_request),
 	LSM_HOOK_INIT(sctp_sk_clone, selinux_sctp_sk_clone),
 	LSM_HOOK_INIT(sctp_bind_connect, selinux_sctp_bind_connect),
+	LSM_HOOK_INIT(sctp_assoc_established, selinux_sctp_assoc_established),
 	LSM_HOOK_INIT(inet_conn_request, selinux_inet_conn_request),
 	LSM_HOOK_INIT(inet_csk_clone, selinux_inet_csk_clone),
 	LSM_HOOK_INIT(inet_conn_established, selinux_inet_conn_established),
@@ -7254,6 +7257,7 @@ static struct security_hook_list selinux_hooks[] __lsm_ro_after_init = {
 #ifdef CONFIG_IO_URING
 	LSM_HOOK_INIT(uring_override_creds, selinux_uring_override_creds),
 	LSM_HOOK_INIT(uring_sqpoll, selinux_uring_sqpoll),
+	LSM_HOOK_INIT(uring_cmd, selinux_uring_cmd),
 #endif
 
 	/*
@@ -7310,6 +7314,8 @@ static __init int selinux_init(void)
 
 	memset(&selinux_state, 0, sizeof(selinux_state));
 	enforcing_set(&selinux_state, selinux_enforcing_boot);
+	if (CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE)
+		pr_err("SELinux: CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE is non-zero.  This is deprecated and will be rejected in a future kernel release.\n");
 	checkreqprot_set(&selinux_state, selinux_checkreqprot_boot);
 	selinux_avc_init(&selinux_state.avc);
 	mutex_init(&selinux_state.status_lock);