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-rw-r--r--crypto/algapi.c42
-rw-r--r--crypto/cbc.c11
-rw-r--r--crypto/cryptomgr.c28
-rw-r--r--crypto/ecb.c11
-rw-r--r--crypto/hmac.c11
-rw-r--r--crypto/lrw.c11
-rw-r--r--crypto/pcbc.c11
-rw-r--r--crypto/xcbc.c12
8 files changed, 103 insertions, 34 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c
index f7d2185b2c8f..491205e11cbe 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -425,15 +425,45 @@ int crypto_unregister_notifier(struct notifier_block *nb)
}
EXPORT_SYMBOL_GPL(crypto_unregister_notifier);
-struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
- u32 type, u32 mask)
+struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb)
{
- struct rtattr *rta = param;
+ struct rtattr *rta = tb[CRYPTOA_TYPE - 1];
+ struct crypto_attr_type *algt;
+
+ if (!rta)
+ return ERR_PTR(-ENOENT);
+ if (RTA_PAYLOAD(rta) < sizeof(*algt))
+ return ERR_PTR(-EINVAL);
+
+ algt = RTA_DATA(rta);
+
+ return algt;
+}
+EXPORT_SYMBOL_GPL(crypto_get_attr_type);
+
+int crypto_check_attr_type(struct rtattr **tb, u32 type)
+{
+ struct crypto_attr_type *algt;
+
+ algt = crypto_get_attr_type(tb);
+ if (IS_ERR(algt))
+ return PTR_ERR(algt);
+
+ if ((algt->type ^ type) & algt->mask)
+ return -EINVAL;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_check_attr_type);
+
+struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, u32 type, u32 mask)
+{
+ struct rtattr *rta = tb[CRYPTOA_ALG - 1];
struct crypto_attr_alg *alga;
- if (!RTA_OK(rta, len))
- return ERR_PTR(-EBADR);
- if (rta->rta_type != CRYPTOA_ALG || RTA_PAYLOAD(rta) < sizeof(*alga))
+ if (!rta)
+ return ERR_PTR(-ENOENT);
+ if (RTA_PAYLOAD(rta) < sizeof(*alga))
return ERR_PTR(-EINVAL);
alga = RTA_DATA(rta);
diff --git a/crypto/cbc.c b/crypto/cbc.c
index 136fea7e7000..1f2649e13b42 100644
--- a/crypto/cbc.c
+++ b/crypto/cbc.c
@@ -275,13 +275,18 @@ static void crypto_cbc_exit_tfm(struct crypto_tfm *tfm)
crypto_free_cipher(ctx->child);
}
-static struct crypto_instance *crypto_cbc_alloc(void *param, unsigned int len)
+static struct crypto_instance *crypto_cbc_alloc(struct rtattr **tb)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
+ int err;
+
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER);
+ if (err)
+ return ERR_PTR(err);
- alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER,
- CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
+ CRYPTO_ALG_TYPE_MASK);
if (IS_ERR(alg))
return ERR_PTR(PTR_ERR(alg));
diff --git a/crypto/cryptomgr.c b/crypto/cryptomgr.c
index 2ebffb84f1d9..7a3df9b41218 100644
--- a/crypto/cryptomgr.c
+++ b/crypto/cryptomgr.c
@@ -26,14 +26,19 @@
struct cryptomgr_param {
struct work_struct work;
+ struct rtattr *tb[CRYPTOA_MAX];
+
+ struct {
+ struct rtattr attr;
+ struct crypto_attr_type data;
+ } type;
+
struct {
struct rtattr attr;
struct crypto_attr_alg data;
} alg;
struct {
- u32 type;
- u32 mask;
char name[CRYPTO_MAX_ALG_NAME];
} larval;
@@ -53,7 +58,7 @@ static void cryptomgr_probe(struct work_struct *work)
goto err;
do {
- inst = tmpl->alloc(&param->alg, sizeof(param->alg));
+ inst = tmpl->alloc(param->tb);
if (IS_ERR(inst))
err = PTR_ERR(inst);
else if ((err = crypto_register_instance(tmpl, inst)))
@@ -70,8 +75,8 @@ out:
return;
err:
- crypto_larval_error(param->larval.name, param->larval.type,
- param->larval.mask);
+ crypto_larval_error(param->larval.name, param->type.data.type,
+ param->type.data.mask);
goto out;
}
@@ -82,7 +87,7 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval)
const char *p;
unsigned int len;
- param = kmalloc(sizeof(*param), GFP_KERNEL);
+ param = kzalloc(sizeof(*param), GFP_KERNEL);
if (!param)
goto err;
@@ -94,7 +99,6 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval)
goto err_free_param;
memcpy(param->template, name, len);
- param->template[len] = 0;
name = p + 1;
for (p = name; isalnum(*p) || *p == '-' || *p == '_'; p++)
@@ -104,14 +108,18 @@ static int cryptomgr_schedule_probe(struct crypto_larval *larval)
if (!len || *p != ')' || p[1])
goto err_free_param;
+ param->type.attr.rta_len = sizeof(param->type);
+ param->type.attr.rta_type = CRYPTOA_TYPE;
+ param->type.data.type = larval->alg.cra_flags;
+ param->type.data.mask = larval->mask;
+ param->tb[CRYPTOA_TYPE - 1] = &param->type.attr;
+
param->alg.attr.rta_len = sizeof(param->alg);
param->alg.attr.rta_type = CRYPTOA_ALG;
memcpy(param->alg.data.name, name, len);
- param->alg.data.name[len] = 0;
+ param->tb[CRYPTOA_ALG - 1] = &param->alg.attr;
memcpy(param->larval.name, larval->alg.cra_name, CRYPTO_MAX_ALG_NAME);
- param->larval.type = larval->alg.cra_flags;
- param->larval.mask = larval->mask;
INIT_WORK(&param->work, cryptomgr_probe);
schedule_work(&param->work);
diff --git a/crypto/ecb.c b/crypto/ecb.c
index 839a0aed8c22..6310387a872c 100644
--- a/crypto/ecb.c
+++ b/crypto/ecb.c
@@ -115,13 +115,18 @@ static void crypto_ecb_exit_tfm(struct crypto_tfm *tfm)
crypto_free_cipher(ctx->child);
}
-static struct crypto_instance *crypto_ecb_alloc(void *param, unsigned int len)
+static struct crypto_instance *crypto_ecb_alloc(struct rtattr **tb)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
+ int err;
+
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER);
+ if (err)
+ return ERR_PTR(err);
- alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER,
- CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
+ CRYPTO_ALG_TYPE_MASK);
if (IS_ERR(alg))
return ERR_PTR(PTR_ERR(alg));
diff --git a/crypto/hmac.c b/crypto/hmac.c
index 44187c5ee593..8802fb6dd5a6 100644
--- a/crypto/hmac.c
+++ b/crypto/hmac.c
@@ -197,13 +197,18 @@ static void hmac_free(struct crypto_instance *inst)
kfree(inst);
}
-static struct crypto_instance *hmac_alloc(void *param, unsigned int len)
+static struct crypto_instance *hmac_alloc(struct rtattr **tb)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
+ int err;
+
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_HASH);
+ if (err)
+ return ERR_PTR(err);
- alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_HASH,
- CRYPTO_ALG_TYPE_HASH_MASK | CRYPTO_ALG_ASYNC);
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_HASH,
+ CRYPTO_ALG_TYPE_HASH_MASK);
if (IS_ERR(alg))
return ERR_PTR(PTR_ERR(alg));
diff --git a/crypto/lrw.c b/crypto/lrw.c
index b4105080ac7a..621095db28b3 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -228,13 +228,18 @@ static void exit_tfm(struct crypto_tfm *tfm)
crypto_free_cipher(ctx->child);
}
-static struct crypto_instance *alloc(void *param, unsigned int len)
+static struct crypto_instance *alloc(struct rtattr **tb)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
+ int err;
+
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER);
+ if (err)
+ return ERR_PTR(err);
- alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER,
- CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
+ CRYPTO_ALG_TYPE_MASK);
if (IS_ERR(alg))
return ERR_PTR(PTR_ERR(alg));
diff --git a/crypto/pcbc.c b/crypto/pcbc.c
index 5174d7fdad6e..c3ed8a1c9f46 100644
--- a/crypto/pcbc.c
+++ b/crypto/pcbc.c
@@ -279,13 +279,18 @@ static void crypto_pcbc_exit_tfm(struct crypto_tfm *tfm)
crypto_free_cipher(ctx->child);
}
-static struct crypto_instance *crypto_pcbc_alloc(void *param, unsigned int len)
+static struct crypto_instance *crypto_pcbc_alloc(struct rtattr **tb)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
+ int err;
+
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER);
+ if (err)
+ return ERR_PTR(err);
- alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER,
- CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
+ CRYPTO_ALG_TYPE_MASK);
if (IS_ERR(alg))
return ERR_PTR(PTR_ERR(alg));
diff --git a/crypto/xcbc.c b/crypto/xcbc.c
index 53e8ccbf0f5f..9f502b86e0ea 100644
--- a/crypto/xcbc.c
+++ b/crypto/xcbc.c
@@ -288,12 +288,18 @@ static void xcbc_exit_tfm(struct crypto_tfm *tfm)
crypto_free_cipher(ctx->child);
}
-static struct crypto_instance *xcbc_alloc(void *param, unsigned int len)
+static struct crypto_instance *xcbc_alloc(struct rtattr **tb)
{
struct crypto_instance *inst;
struct crypto_alg *alg;
- alg = crypto_get_attr_alg(param, len, CRYPTO_ALG_TYPE_CIPHER,
- CRYPTO_ALG_TYPE_HASH_MASK | CRYPTO_ALG_ASYNC);
+ int err;
+
+ err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_HASH);
+ if (err)
+ return ERR_PTR(err);
+
+ alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
+ CRYPTO_ALG_TYPE_MASK);
if (IS_ERR(alg))
return ERR_PTR(PTR_ERR(alg));
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.