diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 395007c82831..652b6771ccaf 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -4818,6 +4818,8 @@ static int smb2_get_ea(struct ksmbd_work *work, struct ksmbd_file *fp,
 		/* align next xattr entry at 4 byte bundary */
 		alignment_bytes = ((next_offset + 3) & ~3) - next_offset;
 		if (alignment_bytes) {
+			if (buf_free_len < alignment_bytes)
+				break;
 			memset(ptr, '\0', alignment_bytes);
 			ptr += alignment_bytes;
 			next_offset += alignment_bytes;