Implement AUDIT_CRYPTO_USERSPACE_OP

8 files changed, 346 insertions, 4 deletions

diff --git a/crypto/userspace/cryptodev_main.c b/crypto/userspace/cryptodev_main.c
index 7afe74c0b18..89cd15b6287 100644
--- a/crypto/userspace/cryptodev_main.c
+++ b/crypto/userspace/cryptodev_main.c
@@ -31,6 +31,7 @@
  *
  */
 
+#include <linux/audit.h>
 #include <linux/crypto.h>
 #include <linux/mm.h>
 #include <linux/highmem.h>
@@ -103,12 +104,20 @@ static int
 cryptodev_open(struct inode *inode, struct file *filp)
 {
 	struct ncr_lists *ncr;
+	int ret;
 
 	ncr = ncr_init_lists();
 	if (ncr == NULL) {
 		return -ENOMEM;
 	}
 
+	ret = audit_log_crypto_op(AUDIT_CRYPTO_OP_CONTEXT_NEW, ncr->id, -1,
+				  NULL, NULL, -1, NULL, 0, -1, NULL, 0);
+	if (ret < 0) {
+		ncr_deinit_lists(ncr);
+		return ret;
+	}
+
 	filp->private_data = ncr;
 	return 0;
 }
@@ -119,6 +128,8 @@ cryptodev_release(struct inode *inode, struct file *filp)
 	struct ncr_lists *ncr = filp->private_data;
 
 	if (ncr) {
+		audit_log_crypto_op(AUDIT_CRYPTO_OP_CONTEXT_DEL, ncr->id, -1,
+				    NULL, NULL, -1, NULL, 0, -1, NULL, 0);
 		ncr_deinit_lists(ncr);
 		filp->private_data = NULL;
 	}
diff --git a/crypto/userspace/ncr-int.h b/crypto/userspace/ncr-int.h
index 3302edf4dc6..21e782d4b5a 100644
--- a/crypto/userspace/ncr-int.h
+++ b/crypto/userspace/ncr-int.h
@@ -101,6 +101,7 @@ struct key_item_st {
 	uid_t uid;
 	pid_t pid;
 
+	int context_id;		/* Only for auditing */
 	ncr_key_t desc;
 };
 
@@ -208,6 +209,7 @@ int key_to_storage_data( uint8_t** data, size_t * data_size, const struct key_it
 
 const struct algo_properties_st *_ncr_algo_to_properties(ncr_algorithm_t algo);
 const struct algo_properties_st *_ncr_nla_to_properties(const struct nlattr *nla);
+const char *ncr_algorithm_name(const struct algo_properties_st *algo);
 int _ncr_key_get_sec_level(struct key_item_st* item);
 const struct algo_properties_st *_ncr_oid_to_properties(oid_st* oid);
 const oid_st* _ncr_properties_to_oid(const struct algo_properties_st * prop, int key_size);
diff --git a/crypto/userspace/ncr-key-wrap.c b/crypto/userspace/ncr-key-wrap.c
index c30fa243941..ce061312dc0 100644
--- a/crypto/userspace/ncr-key-wrap.c
+++ b/crypto/userspace/ncr-key-wrap.c
@@ -22,6 +22,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#include <linux/audit.h>
 #include <linux/ioctl.h>
 #include <linux/mm.h>
 #include <linux/ncr.h>
@@ -532,6 +533,26 @@ int kek_level, wkey_level;
 	return 0;
 }
 
+static const char *ncr_wrap_name(struct nlattr *tb[])
+{
+	static const char *const known_algorithms[] = {
+		NCR_WALG_AES_RFC3394, NCR_WALG_AES_RFC5649
+	};
+
+	size_t i;
+	const struct nlattr *nla;
+
+	/* Only allow known algorithms to prevent log injection.  Return the
+	   static string, not nla_data(), which will go away before the ioctl()
+	   handler returns. */
+	nla = tb[NCR_ATTR_WRAPPING_ALGORITHM];
+	for (i = 0; i < ARRAY_SIZE(known_algorithms); i++) {
+		if (nla_strcmp(nla, known_algorithms[i]) == 0)
+			return known_algorithms[i];
+	}
+	return "unknown";
+}
+
 int ncr_key_wrap(struct ncr_lists *lst, const struct ncr_key_wrap *wrap,
 		 struct nlattr *tb[])
 {
@@ -633,6 +654,14 @@ int ret;
 	ret = data_size;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_WRAP, lst->id, -1, NULL,
+			    ncr_wrap_name(tb), wrap->wrapping_key,
+			    key != NULL ? key->key_id : NULL,
+			    key != NULL ? key->key_id_size : 0,
+			    wrap->source_key,
+			    wkey != NULL ? wkey->key_id : NULL,
+			    wkey != NULL ? wkey->key_id_size : 0);
+
 	if (wkey != NULL) _ncr_key_item_put(wkey);
 	if (key != NULL) _ncr_key_item_put(key);
 	kfree(data);
@@ -710,6 +739,13 @@ int ret;
 	}
 	
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_UNWRAP, lst->id, -1, NULL,
+			    ncr_wrap_name(tb), wrap->wrapping_key,
+			    key != NULL ? key->key_id : NULL,
+			    key != NULL ? key->key_id_size : 0, wrap->dest_key,
+			    wkey != NULL ? wkey->key_id : NULL,
+			    wkey != NULL ? wkey->key_id_size : 0);
+
 	if (wkey != NULL) _ncr_key_item_put(wkey);
 	if (key != NULL) _ncr_key_item_put(key);
 	if (data != NULL) kfree(data);
@@ -773,6 +809,11 @@ int ret;
 	ret = data_size;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_WRAP, lst->id, -1, NULL, NULL,
+			    -1, NULL, 0, wrap->key,
+			    wkey != NULL ? wkey->key_id : NULL,
+			    wkey != NULL ? wkey->key_id_size : 0);
+
 	if (wkey != NULL) _ncr_key_item_put(wkey);
 	if (data != NULL) kfree(data);
 	if (sdata != NULL) kfree(sdata);
@@ -839,6 +880,11 @@ int ret;
 	
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_UNWRAP, lst->id, -1, NULL, NULL,
+			    -1, NULL, 0, wrap->key,
+			    wkey != NULL ? wkey->key_id : NULL,
+			    wkey != NULL ? wkey->key_id_size : 0);
+
 	if (wkey != NULL) _ncr_key_item_put(wkey);
 	if (data != NULL) kfree(data);
 	if (sdata != NULL) kfree(sdata);
diff --git a/crypto/userspace/ncr-key.c b/crypto/userspace/ncr-key.c
index b9aee067d3a..e614f687075 100644
--- a/crypto/userspace/ncr-key.c
+++ b/crypto/userspace/ncr-key.c
@@ -22,6 +22,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#include <linux/audit.h>
 #include <linux/ioctl.h>
 #include <linux/mm.h>
 #include <linux/ncr.h>
@@ -175,6 +176,7 @@ int ncr_key_init(struct ncr_lists *lst)
 	atomic_set(&key->writer, 0);
 	key->uid = current_euid();
 	key->pid = task_pid_nr(current);
+	key->context_id = lst->id;
 
 	mutex_lock(&lst->key_idr_mutex);
 	/* idr_pre_get() should preallocate enough, and, due to key_idr_mutex,
@@ -280,6 +282,10 @@ int ret;
 	}
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_EXPORT, lst->id, -1, NULL,
+			    ncr_algorithm_name(item->algorithm), item->desc,
+			    item->key_id, item->key_id_size, -1, NULL, 0);
+
 	kfree(tmp);
 	_ncr_key_item_put(item);
 	return ret;
@@ -393,6 +399,10 @@ size_t tmp_size;
 	ret = 0;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_IMPORT, lst->id, -1, NULL,
+			    ncr_algorithm_name(item->algorithm), item->desc,
+			    item->key_id, item->key_id_size, -1, NULL, 0);
+
 	_ncr_key_item_put(item);
 	kfree(tmp);
 
@@ -401,6 +411,11 @@ fail:
 
 void ncr_key_clear(struct key_item_st* item)
 {
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_ZEROIZE, item->context_id, -1,
+			    NULL, ncr_algorithm_name(item->algorithm),
+			    item->desc, item->key_id, item->key_id_size, -1,
+			    NULL, 0);
+
 	/* clears any previously allocated parameters */
 	if (item->type == NCR_KEY_TYPE_PRIVATE ||
 		item->type == NCR_KEY_TYPE_PUBLIC) {
@@ -422,7 +437,7 @@ int ncr_key_generate(struct ncr_lists *lst, const struct ncr_key_generate *gen,
 {
 const struct nlattr *nla;
 struct key_item_st* item = NULL;
-const struct algo_properties_st *algo;
+const struct algo_properties_st *algo = NULL;
 int ret;
 size_t size;
 
@@ -482,6 +497,10 @@ size_t size;
 	ret = 0;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_GEN, lst->id, -1, NULL,
+			    ncr_algorithm_name(algo), item->desc, item->key_id,
+			    item->key_id_size, -1, NULL, 0);
+
 	if (ret < 0) item->type = NCR_KEY_TYPE_INVALID;
 	_ncr_key_item_put(item);
 	return ret;
@@ -649,6 +668,10 @@ int ret;
 	}
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_GET_INFO, lst->id, -1, NULL,
+			    ncr_algorithm_name(item->algorithm), item->desc,
+			    item->key_id, item->key_id_size, -1, NULL, 0);
+
 	_ncr_key_item_put( item);
 
 	return ret;
@@ -714,6 +737,16 @@ int ret;
 	
 	ret = 0;
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_GEN, lst->id, -1, NULL,
+			    ncr_algorithm_name(private != NULL
+					       ? private->algorithm : NULL),
+			    private != NULL ? private->desc : -1,
+			    private != NULL ? private->key_id : NULL,
+			    private != NULL ? private->key_id_size : 0,
+			    public != NULL ? public->desc : -1,
+			    public != NULL ? public->key_id : NULL,
+			    public != NULL ? public->key_id_size : 0);
+
 	if (public) {
 		if (ret < 0) public->type = NCR_KEY_TYPE_INVALID;
 		_ncr_key_item_put(public);
@@ -776,6 +809,12 @@ struct key_item_st* newkey = NULL;
 	}
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_KEY_DERIVE, lst->id, -1, NULL,
+			    ncr_algorithm_name(key->algorithm), key->desc,
+			    key->key_id, key->key_id_size, data->input_key,
+			    newkey != NULL ? newkey->key_id : NULL,
+			    newkey != NULL ? newkey->key_id_size : 0);
+
 	_ncr_key_item_put(key);
 	if (newkey)
 		_ncr_key_item_put(newkey);
diff --git a/crypto/userspace/ncr-sessions.c b/crypto/userspace/ncr-sessions.c
index d22a38423fa..b344d087b47 100644
--- a/crypto/userspace/ncr-sessions.c
+++ b/crypto/userspace/ncr-sessions.c
@@ -23,6 +23,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#include <linux/audit.h>
 #include <linux/crypto.h>
 #include <linux/mutex.h>
 #include <linux/ncr.h>
@@ -453,6 +454,32 @@ const struct algo_properties_st *_ncr_nla_to_properties(const struct nlattr *nla
 	return NULL;
 }
 
+static const char *ncr_op_name(ncr_crypto_op_t op)
+{
+	static const char *const names[] = {
+		[NCR_OP_ENCRYPT] = "encrypt",
+		[NCR_OP_DECRYPT] = "decrypt",
+		[NCR_OP_SIGN] = "sign",
+		[NCR_OP_VERIFY] = "verify"
+	};
+
+	const char *res;
+
+	res = NULL;
+	if (op < ARRAY_SIZE(names))
+		res = names[op];
+	if (res == NULL)
+		res = "unknown";
+	return res;
+}
+
+const char *ncr_algorithm_name(const struct algo_properties_st *algo)
+{
+	if (algo != NULL && algo->kstr != NULL)
+		return algo->kstr;
+	return "unknown";
+}
+
 static int key_item_get_nla_read(struct key_item_st **st,
 				 struct ncr_lists *lists,
 				 const struct nlattr *nla)
@@ -754,12 +781,30 @@ static struct session_item_st *_ncr_session_init(struct ncr_lists *lists,
 			goto fail;
 	}
 
+	ret = audit_log_crypto_op(AUDIT_CRYPTO_OP_SESSION_INIT, lists->id,
+				  ns->desc, ncr_op_name(ns->op),
+				  ncr_algorithm_name(ns->algorithm),
+				  ns->key != NULL ? ns->key->desc : -1,
+				  ns->key != NULL ? ns->key->key_id : NULL,
+				  ns->key != NULL ? ns->key->key_id_size : 0,
+				  -1, NULL, 0);
+	if (ret != 0)
+		goto fail_noaudit;
+
 	if (old_session != NULL)
 		_ncr_sessions_item_put(old_session);
 	
 	return ns;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_SESSION_INIT, lists->id, ns->desc,
+			    ncr_op_name(ns->op),
+			    ncr_algorithm_name(ns->algorithm),
+			    ns->key != NULL ? ns->key->desc : -1,
+			    ns->key != NULL ? ns->key->key_id : NULL,
+			    ns->key != NULL ? ns->key->key_id_size : 0, -1,
+			    NULL, 0);
+fail_noaudit:
 	if (old_session != NULL)
 		_ncr_sessions_item_put(old_session);
 	_ncr_sessions_item_put(ns);
@@ -976,7 +1021,8 @@ static int get_userbuf2(struct session_item_st *ses, struct nlattr *tb[],
 
 /* Called when userspace buffers are used.
    The caller is responsible for locking of the session. */
-static int _ncr_session_update(struct session_item_st *sess,
+static int _ncr_session_update(struct ncr_lists *lists,
+			       struct session_item_st *sess,
 			       struct nlattr *tb[], int compat)
 {
 	const struct nlattr *nla;
@@ -1104,6 +1150,11 @@ static int _ncr_session_update(struct session_item_st *sess,
 	ret = 0;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_SESSION_OP, lists->id, sess->desc,
+			    ncr_op_name(sess->op),
+			    ncr_algorithm_name(sess->algorithm), -1, NULL, 0,
+			    -1, NULL, 0);
+
 	if (sess->available_pages) {
 		release_user_pages(sess->pages, sess->available_pages);
 		sess->available_pages = 0;
@@ -1120,7 +1171,7 @@ static int try_session_update(struct ncr_lists *lists,
 	if (tb[NCR_ATTR_UPDATE_INPUT_KEY_AS_DATA] != NULL)
 		return _ncr_session_update_key(lists, sess, tb);
 	else if (tb[NCR_ATTR_UPDATE_INPUT_DATA] != NULL)
-		return _ncr_session_update(sess, tb, compat);
+		return _ncr_session_update(lists, sess, tb, compat);
 	else
 		return 0;
 }
@@ -1283,6 +1334,11 @@ static int _ncr_session_final(struct ncr_lists *lists,
 fail:
 	kfree(buffer);
 
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_SESSION_FINAL, lists->id,
+			    sess->desc, ncr_op_name(sess->op),
+			    ncr_algorithm_name(sess->algorithm), -1, NULL, 0,
+			    -1, NULL, 0);
+
 	return ret;
 }
 
@@ -1344,6 +1400,11 @@ static int _ncr_session_update_key(struct ncr_lists *lists,
 	ret = 0;
 
 fail:
+	audit_log_crypto_op(AUDIT_CRYPTO_OP_SESSION_OP, lists->id, sess->desc,
+			    ncr_op_name(sess->op),
+			    ncr_algorithm_name(sess->algorithm), key->desc,
+			    key->key_id, key->key_id_size, -1, NULL, 0);
+
 	_ncr_key_item_put(key);
 
 	return ret;
@@ -1371,7 +1432,7 @@ int ncr_session_update(struct ncr_lists *lists,
 		goto end;
 	}
 	if (tb[NCR_ATTR_UPDATE_INPUT_DATA] != NULL)
-		ret = _ncr_session_update(sess, tb, compat);
+		ret = _ncr_session_update(lists, sess, tb, compat);
 	else if (tb[NCR_ATTR_UPDATE_INPUT_KEY_AS_DATA] != NULL)
 		ret = _ncr_session_update_key(lists, sess, tb);
 	else
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 35fa4e9c34a..54cb007e340 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -123,6 +123,7 @@
 #define AUDIT_MAC_UNLBL_STCDEL	1417	/* NetLabel: del a static label */
 
 #define AUDIT_CRYPTO_STORAGE_KEY    1600 /* Key storage key configured */
+#define AUDIT_CRYPTO_USERSPACE_OP   1601 /* User-space crypto operation */
 
 #define AUDIT_FIRST_KERN_ANOM_MSG   1700
 #define AUDIT_LAST_KERN_ANOM_MSG    1799
@@ -209,6 +210,7 @@
 #define AUDIT_OBJ_TYPE	21
 #define AUDIT_OBJ_LEV_LOW	22
 #define AUDIT_OBJ_LEV_HIGH	23
+#define AUDIT_CRYPTO_OP	24
 
 				/* These are ONLY useful when checking
 				 * at syscall exit time (AUDIT_AT_EXIT). */
@@ -316,6 +318,20 @@ enum {
 #define AUDIT_PERM_READ		4
 #define AUDIT_PERM_ATTR		8
 
+#define AUDIT_CRYPTO_OP_CONTEXT_NEW	1
+#define AUDIT_CRYPTO_OP_CONTEXT_DEL	2
+#define AUDIT_CRYPTO_OP_SESSION_INIT	3
+#define AUDIT_CRYPTO_OP_SESSION_OP	4
+#define AUDIT_CRYPTO_OP_SESSION_FINAL	5
+#define AUDIT_CRYPTO_OP_KEY_IMPORT	6
+#define AUDIT_CRYPTO_OP_KEY_EXPORT	7
+#define AUDIT_CRYPTO_OP_KEY_WRAP	8
+#define AUDIT_CRYPTO_OP_KEY_UNWRAP	9
+#define AUDIT_CRYPTO_OP_KEY_GEN		10
+#define AUDIT_CRYPTO_OP_KEY_DERIVE	11
+#define AUDIT_CRYPTO_OP_KEY_ZEROIZE	12
+#define AUDIT_CRYPTO_OP_KEY_GET_INFO	13
+
 struct audit_status {
 	__u32		mask;		/* Bit mask for valid entries */
 	__u32		enabled;	/* 1 = enabled, 0 = disabled */
@@ -481,6 +497,10 @@ extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
 				  const struct cred *new,
 				  const struct cred *old);
 extern void __audit_log_capset(pid_t pid, const struct cred *new, const struct cred *old);
+extern int __audit_log_crypto_op(int op, int context, int session,
+				 const char *operation, const char *algorithm,
+				 int key1, void *key1_id, size_t key1_id_size,
+				 int key2, void *key2_id, size_t key2_id_size);
 
 static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
 {
@@ -534,6 +554,20 @@ static inline void audit_log_capset(pid_t pid, const struct cred *new,
 		__audit_log_capset(pid, new, old);
 }
 
+static inline int audit_log_crypto_op(int op, int context, int session,
+				      const char *operation,
+				      const char *algorithm, int key1,
+				      void *key1_id, size_t key1_id_size,
+				      int key2, void *key2_id,
+				      size_t key2_id_size)
+{
+	if (likely(audit_dummy_context()))
+		return 0;
+	return __audit_log_crypto_op(op, context, session, operation, algorithm,
+				     key1, key1_id, key1_id_size, key2, key2_id,
+				     key2_id_size);
+}
+
 extern int audit_n_rules;
 extern int audit_signals;
 #else
@@ -567,6 +601,7 @@ extern int audit_signals;
 #define audit_mq_getsetattr(d,s) ((void)0)
 #define audit_log_bprm_fcaps(b, ncr, ocr) ({ 0; })
 #define audit_log_capset(pid, ncr, ocr) ((void)0)
+#define audit_log_crypto_op(op, ctx, sess, k1, id1, size1, k2, id2, size2) (0)
 #define audit_ptrace(t) ((void)0)
 #define audit_n_rules 0
 #define audit_signals 0
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index a70604047f3..a25a587dc87 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -363,6 +363,7 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
 		case AUDIT_DEVMINOR:
 		case AUDIT_EXIT:
 		case AUDIT_SUCCESS:
+		case AUDIT_CRYPTO_OP:
 			/* bit ops are only useful on syscall args */
 			if (f->op == Audit_bitmask || f->op == Audit_bittest)
 				goto exit_free;
@@ -457,6 +458,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
 		case AUDIT_ARG1:
 		case AUDIT_ARG2:
 		case AUDIT_ARG3:
+		case AUDIT_CRYPTO_OP:
 			break;
 		case AUDIT_ARCH:
 			entry->rule.arch_f = f;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index fc0f928167e..fcd6d2e7ab9 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -50,6 +50,7 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/mount.h>
+#include <linux/ncr.h>
 #include <linux/socket.h>
 #include <linux/mqueue.h>
 #include <linux/audit.h>
@@ -157,6 +158,21 @@ struct audit_aux_data_capset {
 	struct audit_cap_data	cap;
 };
 
+struct audit_crypto_op {
+	struct list_head list;
+	int op;
+	int context;
+	int session;
+	const char *operation;
+	const char *algorithm;
+	int key1;
+	unsigned char key1_id[MAX_KEY_ID_SIZE];
+	size_t key1_id_size;
+	int key2;
+	unsigned char key2_id[MAX_KEY_ID_SIZE];
+	size_t key2_id_size;
+};
+
 struct audit_tree_refs {
 	struct audit_tree_refs *next;
 	struct audit_chunk *c[31];
@@ -181,6 +197,7 @@ struct audit_context {
 	struct audit_context *previous; /* For nested syscalls */
 	struct audit_aux_data *aux;
 	struct audit_aux_data *aux_pids;
+	struct list_head crypto;
 	struct sockaddr_storage *sockaddr;
 	size_t sockaddr_len;
 				/* Save things to print about task_struct */
@@ -632,6 +649,19 @@ static int audit_filter_rules(struct task_struct *tsk,
 		case AUDIT_FILETYPE:
 			result = audit_match_filetype(ctx, f->val);
 			break;
+		case AUDIT_CRYPTO_OP: {
+			struct audit_crypto_op *ax;
+
+			if (!ctx)
+				break;
+			list_for_each_entry(ax, &ctx->crypto, list) {
+				result = audit_comparator(ax->op, f->op,
+							  f->val);
+				if (result)
+					break;
+			}
+			break;
+		}
 		}
 
 		if (!result) {
@@ -827,6 +857,7 @@ static inline void audit_free_names(struct audit_context *context)
 static inline void audit_free_aux(struct audit_context *context)
 {
 	struct audit_aux_data *aux;
+	struct audit_crypto_op *crypto, *tmp;
 
 	while ((aux = context->aux)) {
 		context->aux = aux->next;
@@ -836,6 +867,10 @@ static inline void audit_free_aux(struct audit_context *context)
 		context->aux_pids = aux->next;
 		kfree(aux);
 	}
+	list_for_each_entry_safe(crypto, tmp, &context->crypto, list) {
+		list_del(&crypto->list);
+		kfree(crypto);
+	}
 }
 
 static inline void audit_zero_context(struct audit_context *context,
@@ -853,6 +888,7 @@ static inline struct audit_context *audit_alloc_context(enum audit_state state)
 	if (!(context = kmalloc(sizeof(*context), GFP_KERNEL)))
 		return NULL;
 	audit_zero_context(context, state);
+	INIT_LIST_HEAD(&context->crypto);
 	INIT_LIST_HEAD(&context->killed_trees);
 	return context;
 }
@@ -1310,12 +1346,71 @@ static void show_special(struct audit_context *context, int *call_panic)
 	audit_log_end(ab);
 }
 
+static void log_crypto_op(struct audit_context *context,
+			  struct audit_crypto_op *crypto)
+{
+	static const char *const ops[] = {
+		[AUDIT_CRYPTO_OP_CONTEXT_NEW] = "context_new",
+		[AUDIT_CRYPTO_OP_CONTEXT_DEL] = "context_del",
+		[AUDIT_CRYPTO_OP_SESSION_INIT] = "session_init",
+		[AUDIT_CRYPTO_OP_SESSION_OP] = "session_op",
+		[AUDIT_CRYPTO_OP_SESSION_FINAL] = "session_final",
+		[AUDIT_CRYPTO_OP_KEY_IMPORT] = "key_import",
+		[AUDIT_CRYPTO_OP_KEY_EXPORT] = "key_export",
+		[AUDIT_CRYPTO_OP_KEY_WRAP] = "key_wrap",
+		[AUDIT_CRYPTO_OP_KEY_UNWRAP] = "key_unwrap",
+		[AUDIT_CRYPTO_OP_KEY_GEN] = "key_gen",
+		[AUDIT_CRYPTO_OP_KEY_DERIVE] = "key_derive",
+		[AUDIT_CRYPTO_OP_KEY_ZEROIZE] = "key_zeroize",
+		[AUDIT_CRYPTO_OP_KEY_GET_INFO] = "key_get_info",
+	};
+
+	struct audit_buffer *ab;
+
+	ab = audit_log_start(context, GFP_KERNEL, AUDIT_CRYPTO_USERSPACE_OP);
+	if (!ab)
+		return;
+	if (crypto->op < ARRAY_SIZE(ops) && ops[crypto->op] != NULL)
+		audit_log_format(ab, "crypto_op=%s", ops[crypto->op]);
+	else
+		audit_log_format(ab, "crypto_op=%d", crypto->op);
+	audit_log_format(ab, " ctx=%d", crypto->context);
+	if (crypto->session != -1)
+		audit_log_format(ab, " session=%d", crypto->session);
+	if (crypto->operation != NULL) {
+		audit_log_format(ab, " operation=");
+		audit_log_string(ab, crypto->operation);
+	}
+	if (crypto->algorithm != NULL) {
+		audit_log_format(ab, " algo=");
+		audit_log_string(ab, crypto->algorithm);
+	}
+	if (crypto->key1 != -1) {
+		audit_log_format(ab, " key1=%d", crypto->key1);
+		if (crypto->key1_id_size > 0) {
+			audit_log_format(ab, " key1_id=");
+			audit_log_n_untrustedstring(ab, crypto->key1_id,
+						    crypto->key1_id_size);
+		}
+	}
+	if (crypto->key2 != -1) {
+		audit_log_format(ab, " key2=%d", crypto->key2);
+		if (crypto->key2_id_size > 0) {
+			audit_log_format(ab, " key2_id=");
+			audit_log_n_untrustedstring(ab, crypto->key2_id,
+						    crypto->key2_id_size);
+		}
+	}
+	audit_log_end(ab);
+}
+
 static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
 {
 	const struct cred *cred;
 	int i, call_panic = 0;
 	struct audit_buffer *ab;
 	struct audit_aux_data *aux;
+	struct audit_crypto_op *crypto;
 	const char *tty;
 
 	/* tsk == current */
@@ -1442,6 +1537,9 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
 				call_panic = 1;
 	}
 
+	list_for_each_entry(crypto, &context->crypto, list)
+		log_crypto_op(context, crypto);
+
 	if (context->target_pid &&
 	    audit_log_pid_context(context, context->target_pid,
 				  context->target_auid, context->target_uid,
@@ -2486,6 +2584,54 @@ void __audit_log_capset(pid_t pid,
 }
 
 /**
+ * __audit_log_crypto_op - store information about an user-space crypto op
+ * @op: AUDIT_CRYPTO_OP_*
+ * @context: user-space context ID
+ * @session: session ID within @context, or -1
+ * @operation: more detailed operation description, or NULL
+ * @algorithm: algorithm (crypto API transform) name, or NULL
+ * @key1: ID of key 1 within @context, or -1
+ * @key1_id: user-space ID of key 1 set from user-space if @key1 != -1
+ * @key1_id_size: Size of @key1_id
+ * @key2: ID of key 2 within @context, or -1
+ * @key2_id: user-space ID of key 2 set from user-space if @key2 != -1
+ * @key2_id_size: Size of @key2_id
+ */
+int __audit_log_crypto_op(int op, int context, int session,
+			  const char *operation, const char *algorithm,
+			  int key1, void *key1_id, size_t key1_id_size,
+			  int key2, void *key2_id, size_t key2_id_size)
+{
+	struct audit_crypto_op *ax;
+	struct audit_context *ctx = current->audit_context;
+
+	ax = kmalloc(sizeof(*ax), GFP_KERNEL);
+	if (!ax)
+		return -ENOMEM;
+
+	ax->op = op;
+	ax->context = context;
+	ax->session = session;
+	ax->operation = operation;
+	ax->algorithm = algorithm;
+	ax->key1 = key1;
+	if (key1 != -1) {
+		ax->key1_id_size = min(key1_id_size, sizeof(ax->key1_id));
+		memcpy(ax->key1_id, key1_id, ax->key1_id_size);
+	} else
+		ax->key1_id_size = 0;
+	ax->key2 = key2;
+	if (key2 != -1) {
+		ax->key2_id_size = min(key2_id_size, sizeof(ax->key2_id));
+		memcpy(ax->key2_id, key2_id, ax->key2_id_size);
+	} else
+		ax->key2_id_size = 0;
+	list_add_tail(&ax->list, &ctx->crypto);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__audit_log_crypto_op);
+
+/**
  * audit_core_dumps - record information about processes that end abnormally
  * @signr: signal value
  *