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27dddb67c0
Refreshed all patches. Fixes: - CVE-2019-19332 Compile-tested on: cns3xxx Runtime-tested on: cns3xxx Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
173 lines
6.3 KiB
Diff
173 lines
6.3 KiB
Diff
From 0f7a81374060828280fcfdfbaa162cb559017f9f Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@gmail.com>
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Date: Sat, 18 May 2019 23:28:12 +0200
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Subject: [PATCH 15/15] crypto: crypto4xx - block ciphers should only accept
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complete blocks
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The hardware automatically zero pads incomplete block ciphers
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blocks without raising any errors. This is a screw-up. This
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was noticed by CONFIG_CRYPTO_MANAGER_EXTRA_TESTS tests that
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sent a incomplete blocks and expect them to fail.
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This fixes:
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cbc-aes-ppc4xx encryption unexpectedly succeeded on test vector
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"random: len=2409 klen=32"; expected_error=-22, cfg="random:
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may_sleep use_digest src_divs=[96.90%@+2295, 2.34%@+4066,
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0.32%@alignmask+12, 0.34%@+4087, 0.9%@alignmask+1787, 0.1%@+3767]
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iv_offset=6"
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ecb-aes-ppc4xx encryption unexpectedly succeeded on test vector
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"random: len=1011 klen=32"; expected_error=-22, cfg="random:
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may_sleep use_digest src_divs=[100.0%@alignmask+20]
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dst_divs=[3.12%@+3001, 96.88%@+4070]"
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Cc: Eric Biggers <ebiggers@kernel.org>
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Cc: stable@vger.kernel.org [4.19, 5.0 and 5.1]
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Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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---
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drivers/crypto/amcc/crypto4xx_alg.c | 36 +++++++++++++++++++---------
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drivers/crypto/amcc/crypto4xx_core.c | 16 ++++++-------
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drivers/crypto/amcc/crypto4xx_core.h | 10 ++++----
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3 files changed, 39 insertions(+), 23 deletions(-)
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--- a/drivers/crypto/amcc/crypto4xx_alg.c
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+++ b/drivers/crypto/amcc/crypto4xx_alg.c
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@@ -76,12 +76,16 @@ static void set_dynamic_sa_command_1(str
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}
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static inline int crypto4xx_crypt(struct skcipher_request *req,
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- const unsigned int ivlen, bool decrypt)
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+ const unsigned int ivlen, bool decrypt,
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+ bool check_blocksize)
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{
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struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(req);
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struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
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__le32 iv[AES_IV_SIZE];
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+ if (check_blocksize && !IS_ALIGNED(req->cryptlen, AES_BLOCK_SIZE))
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+ return -EINVAL;
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+
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if (ivlen)
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crypto4xx_memcpy_to_le32(iv, req->iv, ivlen);
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@@ -90,24 +94,34 @@ static inline int crypto4xx_crypt(struct
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ctx->sa_len, 0, NULL);
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}
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-int crypto4xx_encrypt_noiv(struct skcipher_request *req)
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+int crypto4xx_encrypt_noiv_block(struct skcipher_request *req)
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+{
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+ return crypto4xx_crypt(req, 0, false, true);
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+}
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+
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+int crypto4xx_encrypt_iv_stream(struct skcipher_request *req)
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+{
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+ return crypto4xx_crypt(req, AES_IV_SIZE, false, false);
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+}
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+
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+int crypto4xx_decrypt_noiv_block(struct skcipher_request *req)
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{
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- return crypto4xx_crypt(req, 0, false);
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+ return crypto4xx_crypt(req, 0, true, true);
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}
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-int crypto4xx_encrypt_iv(struct skcipher_request *req)
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+int crypto4xx_decrypt_iv_stream(struct skcipher_request *req)
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{
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- return crypto4xx_crypt(req, AES_IV_SIZE, false);
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+ return crypto4xx_crypt(req, AES_IV_SIZE, true, false);
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}
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-int crypto4xx_decrypt_noiv(struct skcipher_request *req)
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+int crypto4xx_encrypt_iv_block(struct skcipher_request *req)
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{
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- return crypto4xx_crypt(req, 0, true);
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+ return crypto4xx_crypt(req, AES_IV_SIZE, false, true);
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}
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-int crypto4xx_decrypt_iv(struct skcipher_request *req)
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+int crypto4xx_decrypt_iv_block(struct skcipher_request *req)
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{
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- return crypto4xx_crypt(req, AES_IV_SIZE, true);
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+ return crypto4xx_crypt(req, AES_IV_SIZE, true, true);
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}
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/**
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@@ -272,8 +286,8 @@ crypto4xx_ctr_crypt(struct skcipher_requ
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return ret;
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}
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- return encrypt ? crypto4xx_encrypt_iv(req)
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- : crypto4xx_decrypt_iv(req);
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+ return encrypt ? crypto4xx_encrypt_iv_stream(req)
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+ : crypto4xx_decrypt_iv_stream(req);
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}
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static int crypto4xx_sk_setup_fallback(struct crypto4xx_ctx *ctx,
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--- a/drivers/crypto/amcc/crypto4xx_core.c
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+++ b/drivers/crypto/amcc/crypto4xx_core.c
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@@ -1211,8 +1211,8 @@ static struct crypto4xx_alg_common crypt
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_IV_SIZE,
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.setkey = crypto4xx_setkey_aes_cbc,
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- .encrypt = crypto4xx_encrypt_iv,
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- .decrypt = crypto4xx_decrypt_iv,
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+ .encrypt = crypto4xx_encrypt_iv_block,
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+ .decrypt = crypto4xx_decrypt_iv_block,
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.init = crypto4xx_sk_init,
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.exit = crypto4xx_sk_exit,
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} },
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@@ -1231,8 +1231,8 @@ static struct crypto4xx_alg_common crypt
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_IV_SIZE,
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.setkey = crypto4xx_setkey_aes_cfb,
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- .encrypt = crypto4xx_encrypt_iv,
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- .decrypt = crypto4xx_decrypt_iv,
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+ .encrypt = crypto4xx_encrypt_iv_stream,
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+ .decrypt = crypto4xx_decrypt_iv_stream,
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.init = crypto4xx_sk_init,
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.exit = crypto4xx_sk_exit,
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} },
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@@ -1291,8 +1291,8 @@ static struct crypto4xx_alg_common crypt
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.min_keysize = AES_MIN_KEY_SIZE,
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.max_keysize = AES_MAX_KEY_SIZE,
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.setkey = crypto4xx_setkey_aes_ecb,
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- .encrypt = crypto4xx_encrypt_noiv,
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- .decrypt = crypto4xx_decrypt_noiv,
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+ .encrypt = crypto4xx_encrypt_noiv_block,
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+ .decrypt = crypto4xx_decrypt_noiv_block,
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.init = crypto4xx_sk_init,
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.exit = crypto4xx_sk_exit,
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} },
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@@ -1311,8 +1311,8 @@ static struct crypto4xx_alg_common crypt
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.max_keysize = AES_MAX_KEY_SIZE,
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.ivsize = AES_IV_SIZE,
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.setkey = crypto4xx_setkey_aes_ofb,
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- .encrypt = crypto4xx_encrypt_iv,
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- .decrypt = crypto4xx_decrypt_iv,
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+ .encrypt = crypto4xx_encrypt_iv_stream,
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+ .decrypt = crypto4xx_decrypt_iv_stream,
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.init = crypto4xx_sk_init,
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.exit = crypto4xx_sk_exit,
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} },
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--- a/drivers/crypto/amcc/crypto4xx_core.h
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+++ b/drivers/crypto/amcc/crypto4xx_core.h
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@@ -183,10 +183,12 @@ int crypto4xx_setkey_rfc3686(struct cryp
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const u8 *key, unsigned int keylen);
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int crypto4xx_encrypt_ctr(struct skcipher_request *req);
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int crypto4xx_decrypt_ctr(struct skcipher_request *req);
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-int crypto4xx_encrypt_iv(struct skcipher_request *req);
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-int crypto4xx_decrypt_iv(struct skcipher_request *req);
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-int crypto4xx_encrypt_noiv(struct skcipher_request *req);
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-int crypto4xx_decrypt_noiv(struct skcipher_request *req);
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+int crypto4xx_encrypt_iv_stream(struct skcipher_request *req);
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+int crypto4xx_decrypt_iv_stream(struct skcipher_request *req);
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+int crypto4xx_encrypt_iv_block(struct skcipher_request *req);
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+int crypto4xx_decrypt_iv_block(struct skcipher_request *req);
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+int crypto4xx_encrypt_noiv_block(struct skcipher_request *req);
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+int crypto4xx_decrypt_noiv_block(struct skcipher_request *req);
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int crypto4xx_rfc3686_encrypt(struct skcipher_request *req);
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int crypto4xx_rfc3686_decrypt(struct skcipher_request *req);
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int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm);
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