diff --git a/openwrt_patches-21.02/151-ksmbd-multiple-vulnerabilities-fix.patch b/openwrt_patches-21.02/151-ksmbd-multiple-vulnerabilities-fix.patch
new file mode 100644
index 0000000..5e70b46
--- /dev/null
+++ b/openwrt_patches-21.02/151-ksmbd-multiple-vulnerabilities-fix.patch
@@ -0,0 +1,434 @@
+diff -Naur a/feeds/packages/kernel/ksmbd/patches/03-multiple_vulnerabilities_fix.patch b/feeds/packages/kernel/ksmbd/patches/03-multiple_vulnerabilities_fix.patch
+--- a/feeds/packages/kernel/ksmbd/patches/03-multiple_vulnerabilities_fix.patch	1970-01-01 08:00:00.000000000 +0800
++++ b/feeds/packages/kernel/ksmbd/patches/03-multiple_vulnerabilities_fix.patch	2023-01-17 17:31:25.943136641 +0800
+@@ -0,0 +1,430 @@
++diff -Naur a/smb2misc.c b/smb2misc.c
++--- a/smb2misc.c	2023-01-17 10:34:34.291983249 +0800
+++++ b/smb2misc.c	2023-01-17 15:17:16.924040490 +0800
++@@ -91,11 +91,6 @@
++ 	*off = 0;
++ 	*len = 0;
++ 
++-	/* error reqeusts do not have data area */
++-	if (hdr->Status && hdr->Status != STATUS_MORE_PROCESSING_REQUIRED &&
++-	    (((struct smb2_err_rsp *)hdr)->StructureSize) == SMB2_ERROR_STRUCTURE_SIZE2_LE)
++-		return ret;
++-
++ 	/*
++ 	 * Following commands have data areas so we have to get the location
++ 	 * of the data buffer offset and data buffer length for the particular
++@@ -137,8 +132,11 @@
++ 		*len = le16_to_cpu(((struct smb2_read_req *)hdr)->ReadChannelInfoLength);
++ 		break;
++ 	case SMB2_WRITE:
++-		if (((struct smb2_write_req *)hdr)->DataOffset) {
++-			*off = le16_to_cpu(((struct smb2_write_req *)hdr)->DataOffset);
+++		if (((struct smb2_write_req *)hdr)->DataOffset ||
+++		    ((struct smb2_write_req *)hdr)->Length) {
+++			*off = max_t(unsigned int,
+++				     le16_to_cpu(((struct smb2_write_req *)hdr)->DataOffset),
+++				     offsetof(struct smb2_write_req, Buffer));
++ 			*len = le32_to_cpu(((struct smb2_write_req *)hdr)->Length);
++ 			break;
++ 		}
++diff -Naur a/smb2pdu.c b/smb2pdu.c
++--- a/smb2pdu.c	2023-01-17 10:37:20.251390488 +0800
+++++ b/smb2pdu.c	2023-01-17 17:25:58.076142662 +0800
++@@ -540,9 +540,10 @@
++ 		struct smb2_query_info_req *req;
++ 
++ 		req = smb2_get_msg(work->request_buf);
++-		if (req->InfoType == SMB2_O_INFO_FILE &&
++-		    (req->FileInfoClass == FILE_FULL_EA_INFORMATION ||
++-		     req->FileInfoClass == FILE_ALL_INFORMATION))
+++		if ((req->InfoType == SMB2_O_INFO_FILE &&
+++		     (req->FileInfoClass == FILE_FULL_EA_INFORMATION ||
+++		     req->FileInfoClass == FILE_ALL_INFORMATION)) ||
+++		    req->InfoType == SMB2_O_INFO_SECURITY)
++ 			sz = large_sz;
++ 	}
++ 
++@@ -1146,12 +1147,16 @@
++ 			       status);
++ 			rsp->hdr.Status = status;
++ 			rc = -EINVAL;
+++			kfree(conn->preauth_info);
+++			conn->preauth_info = NULL;
++ 			goto err_out;
++ 		}
++ 
++ 		rc = init_smb3_11_server(conn);
++ 		if (rc < 0) {
++ 			rsp->hdr.Status = STATUS_INVALID_PARAMETER;
+++			kfree(conn->preauth_info);
+++			conn->preauth_info = NULL;
++ 			goto err_out;
++ 		}
++ 
++@@ -3004,7 +3009,7 @@
++ 						goto err_out;
++ 
++ 					rc = build_sec_desc(user_ns,
++-							    pntsd, NULL,
+++							    pntsd, NULL, 0,
++ 							    OWNER_SECINFO |
++ 							    GROUP_SECINFO |
++ 							    DACL_SECINFO,
++@@ -3861,6 +3866,15 @@
++ 	return 0;
++ }
++ 
+++static int smb2_resp_buf_len(struct ksmbd_work *work, unsigned short hdr2_len)
+++{
+++	int free_len;
+++
+++	free_len = (int)(work->response_sz -
+++		(get_rfc1002_len(work->response_buf) + 4)) - hdr2_len;
+++	return free_len;
+++}
+++
++ static int smb2_calc_max_out_buf_len(struct ksmbd_work *work,
++ 				     unsigned short hdr2_len,
++ 				     unsigned int out_buf_len)
++@@ -3870,9 +3884,7 @@
++ 	if (out_buf_len > work->conn->vals->max_trans_size)
++ 		return -EINVAL;
++ 
++-	free_len = (int)(work->response_sz -
++-			 (get_rfc1002_len(work->response_buf) + 4)) -
++-		hdr2_len;
+++	free_len = smb2_resp_buf_len(work, hdr2_len);
++ 	if (free_len < 0)
++ 		return -EINVAL;
++ 
++@@ -5164,10 +5176,10 @@
++ 	struct smb_ntsd *pntsd = (struct smb_ntsd *)rsp->Buffer, *ppntsd = NULL;
++ 	struct smb_fattr fattr = {{0}};
++ 	struct inode *inode;
++-	__u32 secdesclen;
+++	__u32 secdesclen = 0;
++ 	unsigned int id = KSMBD_NO_FID, pid = KSMBD_NO_FID;
++ 	int addition_info = le32_to_cpu(req->AdditionalInformation);
++-	int rc;
+++	int rc = 0, ppntsd_size = 0;
++ 
++ 	if (addition_info & ~(OWNER_SECINFO | GROUP_SECINFO | DACL_SECINFO |
++ 			      PROTECTED_DACL_SECINFO |
++@@ -5213,11 +5225,14 @@
++ 
++ 	if (test_share_config_flag(work->tcon->share_conf,
++ 				   KSMBD_SHARE_FLAG_ACL_XATTR))
++-		ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
++-				       fp->filp->f_path.dentry, &ppntsd);
++-
++-	rc = build_sec_desc(user_ns, pntsd, ppntsd, addition_info,
++-			    &secdesclen, &fattr);
+++		ppntsd_size = ksmbd_vfs_get_sd_xattr(work->conn, user_ns,
+++						     fp->filp->f_path.dentry,
+++						     &ppntsd);
+++
+++	/* Check if sd buffer size exceeds response buffer size */
+++	if (smb2_resp_buf_len(work, 8) > ppntsd_size)
+++		rc = build_sec_desc(user_ns, pntsd, ppntsd, ppntsd_size,
+++				    addition_info, &secdesclen, &fattr);
++ 	posix_acl_release(fattr.cf_acls);
++ 	posix_acl_release(fattr.cf_dacls);
++ 	kfree(ppntsd);
++@@ -6580,14 +6595,12 @@
++ 		writethrough = true;
++ 
++ 	if (is_rdma_channel == false) {
++-		if ((u64)le16_to_cpu(req->DataOffset) + length >
++-		    get_rfc1002_len(work->request_buf)) {
++-			pr_err("invalid write data offset %u, smb_len %u\n",
++-			       le16_to_cpu(req->DataOffset),
++-			       get_rfc1002_len(work->request_buf));
+++		if (le16_to_cpu(req->DataOffset) <
+++		    offsetof(struct smb2_write_req, Buffer)) {
++ 			err = -EINVAL;
++ 			goto out;
++ 		}
+++
++ 		data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
++ 				    le16_to_cpu(req->DataOffset));
++ 
++diff -Naur a/smbacl.c b/smbacl.c
++--- a/smbacl.c	2023-01-17 16:38:30.244282066 +0800
+++++ b/smbacl.c	2023-01-17 17:03:41.689373609 +0800
++@@ -722,6 +722,7 @@
++ static void set_ntacl_dacl(struct user_namespace *user_ns,
++ 			   struct smb_acl *pndacl,
++ 			   struct smb_acl *nt_dacl,
+++			   unsigned int aces_size,
++ 			   const struct smb_sid *pownersid,
++ 			   const struct smb_sid *pgrpsid,
++ 			   struct smb_fattr *fattr)
++@@ -735,9 +736,19 @@
++ 	if (nt_num_aces) {
++ 		ntace = (struct smb_ace *)((char *)nt_dacl + sizeof(struct smb_acl));
++ 		for (i = 0; i < nt_num_aces; i++) {
++-			memcpy((char *)pndace + size, ntace, le16_to_cpu(ntace->size));
++-			size += le16_to_cpu(ntace->size);
++-			ntace = (struct smb_ace *)((char *)ntace + le16_to_cpu(ntace->size));
+++			unsigned short nt_ace_size;
+++
+++			if (offsetof(struct smb_ace, access_req) > aces_size)
+++				break;
+++
+++			nt_ace_size = le16_to_cpu(ntace->size);
+++			if (nt_ace_size > aces_size)
+++				break;
+++
+++			memcpy((char *)pndace + size, ntace, nt_ace_size);
+++			size += nt_ace_size;
+++			aces_size -= nt_ace_size;
+++			ntace = (struct smb_ace *)((char *)ntace + nt_ace_size);
++ 			num_aces++;
++ 		}
++ 	}
++@@ -910,7 +921,7 @@
++ /* Convert permission bits from mode to equivalent CIFS ACL */
++ int build_sec_desc(struct user_namespace *user_ns,
++ 		   struct smb_ntsd *pntsd, struct smb_ntsd *ppntsd,
++-		   int addition_info, __u32 *secdesclen,
+++		   int ppntsd_size, int addition_info, __u32 *secdesclen,
++ 		   struct smb_fattr *fattr)
++ {
++ 	int rc = 0;
++@@ -970,15 +981,25 @@
++ 
++ 		if (!ppntsd) {
++ 			set_mode_dacl(user_ns, dacl_ptr, fattr);
++-		} else if (!ppntsd->dacloffset) {
++-			goto out;
++ 		} else {
++ 			struct smb_acl *ppdacl_ptr;
+++			unsigned int dacl_offset = le32_to_cpu(ppntsd->dacloffset);
+++			int ppdacl_size, ntacl_size = ppntsd_size - dacl_offset;
+++
+++			if (!dacl_offset ||
+++			    (dacl_offset + sizeof(struct smb_acl) > ppntsd_size))
+++				goto out;
+++
+++			ppdacl_ptr = (struct smb_acl *)((char *)ppntsd + dacl_offset);
+++			ppdacl_size = le16_to_cpu(ppdacl_ptr->size);
+++			if (ppdacl_size > ntacl_size ||
+++			    ppdacl_size < sizeof(struct smb_acl))
+++				goto out;
++ 
++-			ppdacl_ptr = (struct smb_acl *)((char *)ppntsd +
++-						le32_to_cpu(ppntsd->dacloffset));
++ 			set_ntacl_dacl(user_ns, dacl_ptr, ppdacl_ptr,
++-				       nowner_sid_ptr, ngroup_sid_ptr, fattr);
+++				       ntacl_size - sizeof(struct smb_acl),
+++				       nowner_sid_ptr, ngroup_sid_ptr,
+++				       fattr);
++ 		}
++ 		pntsd->dacloffset = cpu_to_le32(offset);
++ 		offset += le16_to_cpu(dacl_ptr->size);
++@@ -1012,24 +1033,31 @@
++ 	struct smb_sid owner_sid, group_sid;
++ 	struct dentry *parent = path->dentry->d_parent;
++ 	struct user_namespace *user_ns = mnt_user_ns(path->mnt);
++-	int inherited_flags = 0, flags = 0, i, ace_cnt = 0, nt_size = 0;
++-	int rc = 0, num_aces, dacloffset, pntsd_type, acl_len;
+++	int inherited_flags = 0, flags = 0, i, ace_cnt = 0, nt_size = 0, pdacl_size;
+++	int rc = 0, num_aces, dacloffset, pntsd_type, pntsd_size, acl_len, aces_size;
++ 	char *aces_base;
++ 	bool is_dir = S_ISDIR(d_inode(path->dentry)->i_mode);
++ 
++-	acl_len = ksmbd_vfs_get_sd_xattr(conn, user_ns,
++-					 parent, &parent_pntsd);
++-	if (acl_len <= 0)
+++	pntsd_size = ksmbd_vfs_get_sd_xattr(conn, user_ns,
+++					    parent, &parent_pntsd);
+++	if (pntsd_size <= 0)
++ 		return -ENOENT;
++ 	dacloffset = le32_to_cpu(parent_pntsd->dacloffset);
++-	if (!dacloffset) {
+++	if (!dacloffset || (dacloffset + sizeof(struct smb_acl) > pntsd_size)) {
++ 		rc = -EINVAL;
++ 		goto free_parent_pntsd;
++ 	}
++ 
++ 	parent_pdacl = (struct smb_acl *)((char *)parent_pntsd + dacloffset);
+++	acl_len = pntsd_size - dacloffset;
++ 	num_aces = le32_to_cpu(parent_pdacl->num_aces);
++ 	pntsd_type = le16_to_cpu(parent_pntsd->type);
+++	pdacl_size = le16_to_cpu(parent_pdacl->size);
+++
+++	if (pdacl_size > acl_len || pdacl_size < sizeof(struct smb_acl)) {
+++		rc = -EINVAL;
+++		goto free_parent_pntsd;
+++	}
++ 
++ 	aces_base = kmalloc(sizeof(struct smb_ace) * num_aces * 2, GFP_KERNEL);
++ 	if (!aces_base) {
++@@ -1040,11 +1068,23 @@
++ 	aces = (struct smb_ace *)aces_base;
++ 	parent_aces = (struct smb_ace *)((char *)parent_pdacl +
++ 			sizeof(struct smb_acl));
+++	aces_size = acl_len - sizeof(struct smb_acl);
++ 
++ 	if (pntsd_type & DACL_AUTO_INHERITED)
++ 		inherited_flags = INHERITED_ACE;
++ 
++ 	for (i = 0; i < num_aces; i++) {
+++		int pace_size;
+++
+++		if (offsetof(struct smb_ace, access_req) > aces_size)
+++			break;
+++
+++		pace_size = le16_to_cpu(parent_aces->size);
+++		if (pace_size > aces_size)
+++			break;
+++
+++		aces_size -= pace_size;
+++
++ 		flags = parent_aces->flags;
++ 		if (!smb_inherit_flags(flags, is_dir))
++ 			goto pass;
++@@ -1089,8 +1129,7 @@
++ 		aces = (struct smb_ace *)((char *)aces + le16_to_cpu(aces->size));
++ 		ace_cnt++;
++ pass:
++-		parent_aces =
++-			(struct smb_ace *)((char *)parent_aces + le16_to_cpu(parent_aces->size));
+++		parent_aces = (struct smb_ace *)((char *)parent_aces + pace_size);
++ 	}
++ 
++ 	if (nt_size > 0) {
++@@ -1185,7 +1224,7 @@
++ 	struct smb_ntsd *pntsd = NULL;
++ 	struct smb_acl *pdacl;
++ 	struct posix_acl *posix_acls;
++-	int rc = 0, acl_size;
+++	int rc = 0, pntsd_size, acl_size, aces_size, pdacl_size, dacl_offset;
++ 	struct smb_sid sid;
++ 	int granted = le32_to_cpu(*pdaccess & ~FILE_MAXIMAL_ACCESS_LE);
++ 	struct smb_ace *ace;
++@@ -1194,37 +1233,33 @@
++ 	struct smb_ace *others_ace = NULL;
++ 	struct posix_acl_entry *pa_entry;
++ 	unsigned int sid_type = SIDOWNER;
++-	char *end_of_acl;
+++	unsigned short ace_size;
++ 
++ 	ksmbd_debug(SMB, "check permission using windows acl\n");
++-	acl_size = ksmbd_vfs_get_sd_xattr(conn, user_ns,
++-					  path->dentry, &pntsd);
++-	if (acl_size <= 0 || !pntsd || !pntsd->dacloffset) {
++-		kfree(pntsd);
++-		return 0;
++-	}
+++	pntsd_size = ksmbd_vfs_get_sd_xattr(conn, user_ns,
+++					    path->dentry, &pntsd);
+++	if (pntsd_size <= 0 || !pntsd)
+++		goto err_out;
+++
+++	dacl_offset = le32_to_cpu(pntsd->dacloffset);
+++	if (!dacl_offset ||
+++	    (dacl_offset + sizeof(struct smb_acl) > pntsd_size))
+++		goto err_out;
++ 
++ 	pdacl = (struct smb_acl *)((char *)pntsd + le32_to_cpu(pntsd->dacloffset));
++-	end_of_acl = ((char *)pntsd) + acl_size;
++-	if (end_of_acl <= (char *)pdacl) {
++-		kfree(pntsd);
++-		return 0;
++-	}
+++	acl_size = pntsd_size - dacl_offset;
+++	pdacl_size = le16_to_cpu(pdacl->size);
++ 
++-	if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size) ||
++-	    le16_to_cpu(pdacl->size) < sizeof(struct smb_acl)) {
++-		kfree(pntsd);
++-		return 0;
++-	}
+++	if (pdacl_size > acl_size || pdacl_size < sizeof(struct smb_acl))
+++		goto err_out;
++ 
++ 	if (!pdacl->num_aces) {
++-		if (!(le16_to_cpu(pdacl->size) - sizeof(struct smb_acl)) &&
+++		if (!(pdacl_size - sizeof(struct smb_acl)) &&
++ 		    *pdaccess & ~(FILE_READ_CONTROL_LE | FILE_WRITE_DAC_LE)) {
++ 			rc = -EACCES;
++ 			goto err_out;
++ 		}
++-		kfree(pntsd);
++-		return 0;
+++		goto err_out;
++ 	}
++ 
++ 	if (*pdaccess & FILE_MAXIMAL_ACCESS_LE) {
++@@ -1232,11 +1267,16 @@
++ 			DELETE;
++ 
++ 		ace = (struct smb_ace *)((char *)pdacl + sizeof(struct smb_acl));
+++		aces_size = acl_size - sizeof(struct smb_acl);
++ 		for (i = 0; i < le32_to_cpu(pdacl->num_aces); i++) {
+++			if (offsetof(struct smb_ace, access_req) > aces_size)
+++				break;
+++			ace_size = le16_to_cpu(ace->size);
+++			if (ace_size > aces_size)
+++				break;
+++			aces_size -= ace_size;
++ 			granted |= le32_to_cpu(ace->access_req);
++ 			ace = (struct smb_ace *)((char *)ace + le16_to_cpu(ace->size));
++-			if (end_of_acl < (char *)ace)
++-				goto err_out;
++ 		}
++ 
++ 		if (!pdacl->num_aces)
++@@ -1248,7 +1288,15 @@
++ 	id_to_sid(uid, sid_type, &sid);
++ 
++ 	ace = (struct smb_ace *)((char *)pdacl + sizeof(struct smb_acl));
+++	aces_size = acl_size - sizeof(struct smb_acl);
++ 	for (i = 0; i < le32_to_cpu(pdacl->num_aces); i++) {
+++		if (offsetof(struct smb_ace, access_req) > aces_size)
+++			break;
+++		ace_size = le16_to_cpu(ace->size);
+++		if (ace_size > aces_size)
+++			break;
+++		aces_size -= ace_size;
+++
++ 		if (!compare_sids(&sid, &ace->sid) ||
++ 		    !compare_sids(&sid_unix_NFS_mode, &ace->sid)) {
++ 			found = 1;
++@@ -1258,8 +1306,6 @@
++ 			others_ace = ace;
++ 
++ 		ace = (struct smb_ace *)((char *)ace + le16_to_cpu(ace->size));
++-		if (end_of_acl < (char *)ace)
++-			goto err_out;
++ 	}
++ 
++ 	if (*pdaccess & FILE_MAXIMAL_ACCESS_LE && found) {
++diff -Naur a/smbacl.h b/smbacl.h
++--- a/smbacl.h	2023-01-17 17:09:11.618949941 +0800
+++++ b/smbacl.h	2023-01-17 17:10:10.681651570 +0800
++@@ -196,7 +196,7 @@
++ int parse_sec_desc(struct user_namespace *user_ns, struct smb_ntsd *pntsd,
++ 		   int acl_len, struct smb_fattr *fattr);
++ int build_sec_desc(struct user_namespace *user_ns, struct smb_ntsd *pntsd,
++-		   struct smb_ntsd *ppntsd, int addition_info,
+++		   struct smb_ntsd *ppntsd, int ppntsd_size, int addition_info,
++ 		   __u32 *secdesclen, struct smb_fattr *fattr);
++ int init_acl_state(struct posix_acl_state *state, int cnt);
++ void free_acl_state(struct posix_acl_state *state);
++diff -Naur a/vfs.c b/vfs.c
++--- a/vfs.c	2023-01-17 17:10:33.910672093 +0800
+++++ b/vfs.c	2023-01-17 17:11:28.493111948 +0800
++@@ -1708,6 +1708,11 @@
++ 	}
++ 
++ 	*pntsd = acl.sd_buf;
+++	if (acl.sd_size < sizeof(struct smb_ntsd)) {
+++		pr_err("sd size is invalid\n");
+++		goto out_free;
+++	}
+++
++ 	(*pntsd)->osidoffset = cpu_to_le32(le32_to_cpu((*pntsd)->osidoffset) -
++ 					   NDR_NTSD_OFFSETOF);
++ 	(*pntsd)->gsidoffset = cpu_to_le32(le32_to_cpu((*pntsd)->gsidoffset) -