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opencryptoki/opencryptoki-3.16.0-c79e899d77a5724635a9d4451a34a240e2c7e891.patch
Than Ngo 28bfbcca91 - Resolves: #1959894, Soft token does not check if an EC key is valid 
- Resolves: #1924120, Event Notification Support
2021-05-17 17:23:09 +02:00

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commit c79e899d77a5724635a9d4451a34a240e2c7e891
Author: Ingo Franzki <ifranzki@linux.ibm.com>
Date: Fri Apr 16 13:41:41 2021 +0200
Fix potential deadlock situation with double read-locks
Do not get and read-lock an object twice within the same thread via
function object_mgr_find_in_map1(), as this would read-lock the object
twice.
This could cause a deadlock situation, when in-between the first
and the second call to object_mgr_find_in_map1() the token object is
modified by another process. The second object_mgr_find_in_map1() would
detect that the object has been modified (object_mgr_check_shm()), and
would try to re-load the object from the disk. For re-loading, the
object is unlocked once, and a write-lock is acquired instead.
However, if the current thread has read-locked the object twice, but
releases only one read-lock, then it will never get the write lock,
because it still owns the read lock itself.
To avoid this situation, release the read-lock before calling another
function that also acquires the read lock of the object. That way, only
one read-lock is held by the current thread, and re-loading the object
will not cause a deadlock.
Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com>
diff --git a/usr/lib/common/decr_mgr.c b/usr/lib/common/decr_mgr.c
index 317ef995..9842302b 100644
--- a/usr/lib/common/decr_mgr.c
+++ b/usr/lib/common/decr_mgr.c
@@ -540,6 +540,10 @@ CK_RV decr_mgr_init(STDLL_TokData_t *tokdata,
}
memset(ctx->context, 0x0, sizeof(AES_GCM_CONTEXT));
+ /* Release obj lock, token specific aes-gcm may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = aes_gcm_init(tokdata, sess, ctx, mech, key_handle, 0);
if (rc) {
TRACE_ERROR("Could not initialize AES_GCM parms.\n");
diff --git a/usr/lib/common/encr_mgr.c b/usr/lib/common/encr_mgr.c
index d3ecdeee..3e85ceab 100644
--- a/usr/lib/common/encr_mgr.c
+++ b/usr/lib/common/encr_mgr.c
@@ -537,6 +537,10 @@ CK_RV encr_mgr_init(STDLL_TokData_t *tokdata,
}
memset(ctx->context, 0x0, sizeof(AES_GCM_CONTEXT));
+ /* Release obj lock, token specific aes-gcm may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = aes_gcm_init(tokdata, sess, ctx, mech, key_handle, 1);
if (rc != CKR_OK) {
TRACE_ERROR("Could not initialize AES_GCM parms.\n");
diff --git a/usr/lib/common/mech_rsa.c b/usr/lib/common/mech_rsa.c
index 1652f90a..e35b383c 100644
--- a/usr/lib/common/mech_rsa.c
+++ b/usr/lib/common/mech_rsa.c
@@ -602,6 +602,10 @@ CK_RV rsa_oaep_crypt(STDLL_TokData_t *tokdata, SESSION *sess,
goto done;
}
+ /* Release obj lock, token specific rsa-oaep may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = token_specific.t_rsa_oaep_encrypt(tokdata, ctx, in_data,
in_data_len, out_data,
out_data_len, hash, hlen);
@@ -625,6 +629,10 @@ CK_RV rsa_oaep_crypt(STDLL_TokData_t *tokdata, SESSION *sess,
goto done;
}
+ /* Release obj lock, token specific rsa-oaep may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = token_specific.t_rsa_oaep_decrypt(tokdata, ctx, in_data,
in_data_len, out_data,
out_data_len, hash, hlen);
@@ -1331,6 +1339,10 @@ CK_RV rsa_pss_sign(STDLL_TokData_t *tokdata, SESSION *sess,
goto done;
}
+ /* Release obj lock, token specific rsa_pss may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = token_specific.t_rsa_pss_sign(tokdata, sess, ctx, in_data, in_data_len,
out_data, out_data_len);
if (rc != CKR_OK)
@@ -1389,6 +1401,10 @@ CK_RV rsa_pss_verify(STDLL_TokData_t *tokdata, SESSION *sess,
goto done;
}
+ /* Release obj lock, token specific rsa_pss may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = token_specific.t_rsa_pss_verify(tokdata, sess, ctx, in_data,
in_data_len, signature, sig_len);
if (rc != CKR_OK)
diff --git a/usr/lib/common/sign_mgr.c b/usr/lib/common/sign_mgr.c
index 937a371a..c7268e01 100644
--- a/usr/lib/common/sign_mgr.c
+++ b/usr/lib/common/sign_mgr.c
@@ -424,6 +424,10 @@ CK_RV sign_mgr_init(STDLL_TokData_t *tokdata,
ctx->context_len = 0;
ctx->context = NULL;
+ /* Release obj lock, token specific hmac-sign may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = hmac_sign_init(tokdata, sess, mech, key);
if (rc != CKR_OK) {
TRACE_ERROR("Failed to initialize hmac.\n");
diff --git a/usr/lib/ep11_stdll/ep11_specific.c b/usr/lib/ep11_stdll/ep11_specific.c
index 3ac3768a..52f95d7a 100644
--- a/usr/lib/ep11_stdll/ep11_specific.c
+++ b/usr/lib/ep11_stdll/ep11_specific.c
@@ -6948,6 +6948,13 @@ CK_RV ep11tok_sign_init(STDLL_TokData_t * tokdata, SESSION * session,
rc = ep11tok_pkey_check(tokdata, session, key_obj, mech);
switch (rc) {
case CKR_OK:
+ /*
+ * Release obj lock, sign_mgr_init or ep11tok_sign_verify_init_ibm_ed
+ * may re-acquire the lock
+ */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
/* Note that Edwards curves in general are not yet supported in
* opencryptoki. These two special IBM specific ED mechs are only
* supported by the ep11token, so let's keep them local here. */
@@ -7029,11 +7036,16 @@ CK_RV ep11tok_sign(STDLL_TokData_t * tokdata, SESSION * session,
* opencryptoki. These two special IBM specific ED mechs are only
* supported by the ep11token, so let's keep them local here. */
if (ctx->mech.mechanism == CKM_IBM_ED25519_SHA512 ||
- ctx->mech.mechanism == CKM_IBM_ED448_SHA3)
+ ctx->mech.mechanism == CKM_IBM_ED448_SHA3) {
rc = pkey_ibm_ed_sign(key_obj, in_data, in_data_len, signature, sig_len);
- else
+ } else {
+ /* Release obj lock, sign_mgr_sign may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = sign_mgr_sign(tokdata, session, length_only, ctx, in_data,
in_data_len, signature, sig_len);
+ }
goto done; /* no ep11 fallback possible */
}
@@ -7071,6 +7083,11 @@ CK_RV ep11tok_sign_update(STDLL_TokData_t * tokdata, SESSION * session,
if (!in_data || !in_data_len)
return CKR_OK;
+ if (ctx->pkey_active) {
+ rc = sign_mgr_sign_update(tokdata, session, ctx, in_data, in_data_len);
+ goto done; /* no ep11 fallback possible */
+ }
+
rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
READ_LOCK);
if (rc != CKR_OK) {
@@ -7078,11 +7095,6 @@ CK_RV ep11tok_sign_update(STDLL_TokData_t * tokdata, SESSION * session,
return rc;
}
- if (ctx->pkey_active) {
- rc = sign_mgr_sign_update(tokdata, session, ctx, in_data, in_data_len);
- goto done; /* no ep11 fallback possible */
- }
-
RETRY_START
rc = dll_m_SignUpdate(ctx->context, ctx->context_len, in_data,
in_data_len, ep11_data->target);
@@ -7115,6 +7127,11 @@ CK_RV ep11tok_sign_final(STDLL_TokData_t * tokdata, SESSION * session,
CK_BYTE *keyblob;
OBJECT *key_obj = NULL;
+ if (ctx->pkey_active) {
+ rc = sign_mgr_sign_final(tokdata, session, length_only, ctx, signature, sig_len);
+ goto done; /* no ep11 fallback possible */
+ }
+
rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
READ_LOCK);
if (rc != CKR_OK) {
@@ -7122,11 +7139,6 @@ CK_RV ep11tok_sign_final(STDLL_TokData_t * tokdata, SESSION * session,
return rc;
}
- if (ctx->pkey_active) {
- rc = sign_mgr_sign_final(tokdata, session, length_only, ctx, signature, sig_len);
- goto done; /* no ep11 fallback possible */
- }
-
RETRY_START
rc = dll_m_SignFinal(ctx->context, ctx->context_len, signature, sig_len,
ep11_data->target);
@@ -7241,6 +7253,13 @@ CK_RV ep11tok_verify_init(STDLL_TokData_t * tokdata, SESSION * session,
rc = ep11tok_pkey_check(tokdata, session, key_obj, mech);
switch (rc) {
case CKR_OK:
+ /*
+ * Release obj lock, verify_mgr_init or ep11tok_sign_verify_init_ibm_ed
+ * may re-acquire the lock
+ */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
/* Note that Edwards curves in general are not yet supported in
* opencryptoki. These two special IBM specific ED mechs are only
* supported by the ep11token, so let's keep them local here. */
@@ -7320,12 +7339,17 @@ CK_RV ep11tok_verify(STDLL_TokData_t * tokdata, SESSION * session,
* opencryptoki. These two special IBM specific ED mechs are only
* supported by the ep11token, so let's keep them local here. */
if (ctx->mech.mechanism == CKM_IBM_ED25519_SHA512 ||
- ctx->mech.mechanism == CKM_IBM_ED448_SHA3)
+ ctx->mech.mechanism == CKM_IBM_ED448_SHA3) {
rc = pkey_ibm_ed_verify(key_obj, in_data, in_data_len,
signature, sig_len);
- else
+ } else {
+ /* Release obj lock, verify_mgr_verify may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
rc = verify_mgr_verify(tokdata, session, ctx, in_data,
in_data_len, signature, sig_len);
+ }
goto done; /* no ep11 fallback possible */
}
@@ -7363,6 +7387,11 @@ CK_RV ep11tok_verify_update(STDLL_TokData_t * tokdata, SESSION * session,
if (!in_data || !in_data_len)
return CKR_OK;
+ if (ctx->pkey_active) {
+ rc = verify_mgr_verify_update(tokdata, session, ctx, in_data, in_data_len);
+ goto done; /* no ep11 fallback possible */
+ }
+
rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
READ_LOCK);
if (rc != CKR_OK) {
@@ -7370,11 +7399,6 @@ CK_RV ep11tok_verify_update(STDLL_TokData_t * tokdata, SESSION * session,
return rc;
}
- if (ctx->pkey_active) {
- rc = verify_mgr_verify_update(tokdata, session, ctx, in_data, in_data_len);
- goto done; /* no ep11 fallback possible */
- }
-
RETRY_START
rc = dll_m_VerifyUpdate(ctx->context, ctx->context_len, in_data,
in_data_len, ep11_data->target);
@@ -7406,6 +7430,11 @@ CK_RV ep11tok_verify_final(STDLL_TokData_t * tokdata, SESSION * session,
CK_BYTE *keyblob;
OBJECT *key_obj = NULL;
+ if (ctx->pkey_active) {
+ rc = verify_mgr_verify_final(tokdata, session, ctx, signature, sig_len);
+ goto done; /* no ep11 fallback possible */
+ }
+
rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
READ_LOCK);
if (rc != CKR_OK) {
@@ -7413,11 +7442,6 @@ CK_RV ep11tok_verify_final(STDLL_TokData_t * tokdata, SESSION * session,
return rc;
}
- if (ctx->pkey_active) {
- rc = verify_mgr_verify_final(tokdata, session, ctx, signature, sig_len);
- goto done; /* no ep11 fallback possible */
- }
-
RETRY_START
rc = dll_m_VerifyFinal(ctx->context, ctx->context_len, signature,
sig_len, ep11_data->target);
@@ -7501,6 +7525,12 @@ CK_RV ep11tok_decrypt_final(STDLL_TokData_t * tokdata, SESSION * session,
CK_BYTE *keyblob;
OBJECT *key_obj = NULL;
+ if (ctx->pkey_active) {
+ rc = decr_mgr_decrypt_final(tokdata, session, length_only,
+ ctx, output_part, p_output_part_len);
+ goto done; /* no ep11 fallback possible */
+ }
+
rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
READ_LOCK);
if (rc != CKR_OK) {
@@ -7508,12 +7538,6 @@ CK_RV ep11tok_decrypt_final(STDLL_TokData_t * tokdata, SESSION * session,
return rc;
}
- if (ctx->pkey_active) {
- rc = decr_mgr_decrypt_final(tokdata, session, length_only,
- ctx, output_part, p_output_part_len);
- goto done; /* no ep11 fallback possible */
- }
-
RETRY_START
rc = dll_m_DecryptFinal(ctx->context, ctx->context_len,
output_part, p_output_part_len,
@@ -7548,13 +7572,6 @@ CK_RV ep11tok_decrypt(STDLL_TokData_t * tokdata, SESSION * session,
CK_BYTE *keyblob;
OBJECT *key_obj = NULL;
- rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
- READ_LOCK);
- if (rc != CKR_OK) {
- TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
- return rc;
- }
-
if (ctx->pkey_active) {
rc = decr_mgr_decrypt(tokdata, session, length_only, ctx,
input_data, input_data_len, output_data,
@@ -7562,6 +7579,13 @@ CK_RV ep11tok_decrypt(STDLL_TokData_t * tokdata, SESSION * session,
goto done; /* no ep11 fallback possible */
}
+ rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
+ READ_LOCK);
+ if (rc != CKR_OK) {
+ TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
+ return rc;
+ }
+
RETRY_START
rc = dll_m_Decrypt(ctx->context, ctx->context_len, input_data,
input_data_len, output_data, p_output_data_len,
@@ -7602,13 +7626,6 @@ CK_RV ep11tok_decrypt_update(STDLL_TokData_t * tokdata, SESSION * session,
return CKR_OK; /* nothing to update, keep context */
}
- rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
- READ_LOCK);
- if (rc != CKR_OK) {
- TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
- return rc;
- }
-
if (ctx->pkey_active) {
rc = decr_mgr_decrypt_update(tokdata, session, length_only,
ctx, input_part, input_part_len,
@@ -7616,6 +7633,13 @@ CK_RV ep11tok_decrypt_update(STDLL_TokData_t * tokdata, SESSION * session,
goto done; /* no ep11 fallback possible */
}
+ rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
+ READ_LOCK);
+ if (rc != CKR_OK) {
+ TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
+ return rc;
+ }
+
RETRY_START
rc = dll_m_DecryptUpdate(ctx->context, ctx->context_len,
input_part, input_part_len, output_part,
@@ -7695,6 +7719,12 @@ CK_RV ep11tok_encrypt_final(STDLL_TokData_t * tokdata, SESSION * session,
CK_BYTE *keyblob;
OBJECT *key_obj = NULL;
+ if (ctx->pkey_active) {
+ rc = encr_mgr_encrypt_final(tokdata, session, length_only,
+ ctx, output_part, p_output_part_len);
+ goto done; /* no ep11 fallback possible */
+ }
+
rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
READ_LOCK);
if (rc != CKR_OK) {
@@ -7702,12 +7732,6 @@ CK_RV ep11tok_encrypt_final(STDLL_TokData_t * tokdata, SESSION * session,
return rc;
}
- if (ctx->pkey_active) {
- rc = encr_mgr_encrypt_final(tokdata, session, length_only,
- ctx, output_part, p_output_part_len);
- goto done; /* no ep11 fallback possible */
- }
-
RETRY_START
rc = dll_m_EncryptFinal(ctx->context, ctx->context_len,
output_part, p_output_part_len,
@@ -7742,13 +7766,6 @@ CK_RV ep11tok_encrypt(STDLL_TokData_t * tokdata, SESSION * session,
CK_BYTE *keyblob;
OBJECT *key_obj = NULL;
- rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
- READ_LOCK);
- if (rc != CKR_OK) {
- TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
- return rc;
- }
-
if (ctx->pkey_active) {
rc = encr_mgr_encrypt(tokdata, session, length_only, ctx,
input_data, input_data_len, output_data,
@@ -7756,6 +7773,13 @@ CK_RV ep11tok_encrypt(STDLL_TokData_t * tokdata, SESSION * session,
goto done; /* no ep11 fallback possible */
}
+ rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
+ READ_LOCK);
+ if (rc != CKR_OK) {
+ TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
+ return rc;
+ }
+
RETRY_START
rc = dll_m_Encrypt(ctx->context, ctx->context_len, input_data,
input_data_len, output_data, p_output_data_len,
@@ -7796,13 +7820,6 @@ CK_RV ep11tok_encrypt_update(STDLL_TokData_t * tokdata, SESSION * session,
return CKR_OK; /* nothing to update, keep context */
}
- rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
- READ_LOCK);
- if (rc != CKR_OK) {
- TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
- return rc;
- }
-
if (ctx->pkey_active) {
rc = encr_mgr_encrypt_update(tokdata, session, length_only, ctx,
input_part, input_part_len, output_part,
@@ -7810,6 +7827,13 @@ CK_RV ep11tok_encrypt_update(STDLL_TokData_t * tokdata, SESSION * session,
goto done; /* no ep11 fallback possible */
}
+ rc = h_opaque_2_blob(tokdata, ctx->key, &keyblob, &keyblobsize, &key_obj,
+ READ_LOCK);
+ if (rc != CKR_OK) {
+ TRACE_ERROR("%s h_opaque_2_blob, rc=0x%lx\n", __func__, rc);
+ return rc;
+ }
+
RETRY_START
rc = dll_m_EncryptUpdate(ctx->context, ctx->context_len,
input_part, input_part_len, output_part,
@@ -7921,6 +7945,10 @@ static CK_RV ep11_ende_crypt_init(STDLL_TokData_t * tokdata, SESSION * session,
rc = ep11tok_pkey_check(tokdata, session, key_obj, mech);
switch (rc) {
case CKR_OK:
+ /* Release obj lock, encr/decr_mgr_init may re-acquire the lock */
+ object_put(tokdata, key_obj, TRUE);
+ key_obj = NULL;
+
if (op == DECRYPT) {
rc = decr_mgr_init(tokdata, session, &session->decr_ctx,
OP_DECRYPT_INIT, mech, key);
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