diff options
Diffstat (limited to 'crypto/authenc.c')
| -rw-r--r-- | crypto/authenc.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/crypto/authenc.c b/crypto/authenc.c index 37f54d1b2f66..b3eddac7fa3a 100644 --- a/crypto/authenc.c +++ b/crypto/authenc.c @@ -58,14 +58,22 @@ int crypto_authenc_extractkeys(struct crypto_authenc_keys *keys, const u8 *key, return -EINVAL; if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) return -EINVAL; - if (RTA_PAYLOAD(rta) < sizeof(*param)) + + /* + * RTA_OK() didn't align the rtattr's payload when validating that it + * fits in the buffer. Yet, the keys should start on the next 4-byte + * aligned boundary. To avoid confusion, require that the rtattr + * payload be exactly the param struct, which has a 4-byte aligned size. + */ + if (RTA_PAYLOAD(rta) != sizeof(*param)) return -EINVAL; + BUILD_BUG_ON(sizeof(*param) % RTA_ALIGNTO); param = RTA_DATA(rta); keys->enckeylen = be32_to_cpu(param->enckeylen); - key += RTA_ALIGN(rta->rta_len); - keylen -= RTA_ALIGN(rta->rta_len); + key += rta->rta_len; + keylen -= rta->rta_len; if (keylen < keys->enckeylen) return -EINVAL; @@ -500,7 +508,7 @@ static void __exit crypto_authenc_module_exit(void) crypto_unregister_template(&crypto_authenc_tmpl); } -module_init(crypto_authenc_module_init); +subsys_initcall(crypto_authenc_module_init); module_exit(crypto_authenc_module_exit); MODULE_LICENSE("GPL"); |