This is a note to let you know that I've just added the patch titled
crypto: s5p-sss - Fix kernel Oops in AES-ECB mode
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: crypto-s5p-sss-fix-kernel-oops-in-aes-ecb-mode.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From c927b080c67e3e97193c81fc1d27f4251bf4e036 Mon Sep 17 00:00:00 2001
From: Kamil Konieczny k.konieczny@partner.samsung.com Date: Wed, 7 Feb 2018 16:52:09 +0100 Subject: crypto: s5p-sss - Fix kernel Oops in AES-ECB mode
From: Kamil Konieczny k.konieczny@partner.samsung.com
commit c927b080c67e3e97193c81fc1d27f4251bf4e036 upstream.
In AES-ECB mode crypt is done with key only, so any use of IV can cause kernel Oops. Use IV only in AES-CBC and AES-CTR.
Signed-off-by: Kamil Konieczny k.konieczny@partner.samsung.com Reported-by: Anand Moon linux.amoon@gmail.com Reviewed-by: Krzysztof Kozlowski krzk@kernel.org Tested-by: Anand Moon linux.amoon@gmail.com Cc: stable@vger.kernel.org # can be applied after commit 8f9702aad138 Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/crypto/s5p-sss.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
--- a/drivers/crypto/s5p-sss.c +++ b/drivers/crypto/s5p-sss.c @@ -542,15 +542,21 @@ static void s5p_aes_crypt_start(struct s uint32_t aes_control; unsigned long flags; int err; + u8 *iv;
aes_control = SSS_AES_KEY_CHANGE_MODE; if (mode & FLAGS_AES_DECRYPT) aes_control |= SSS_AES_MODE_DECRYPT;
- if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CBC) + if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CBC) { aes_control |= SSS_AES_CHAIN_MODE_CBC; - else if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CTR) + iv = req->info; + } else if ((mode & FLAGS_AES_MODE_MASK) == FLAGS_AES_CTR) { aes_control |= SSS_AES_CHAIN_MODE_CTR; + iv = req->info; + } else { + iv = NULL; /* AES_ECB */ + }
if (dev->ctx->keylen == AES_KEYSIZE_192) aes_control |= SSS_AES_KEY_SIZE_192; @@ -581,7 +587,7 @@ static void s5p_aes_crypt_start(struct s goto outdata_error;
SSS_AES_WRITE(dev, AES_CONTROL, aes_control); - s5p_set_aes(dev, dev->ctx->aes_key, req->info, dev->ctx->keylen); + s5p_set_aes(dev, dev->ctx->aes_key, iv, dev->ctx->keylen);
s5p_set_dma_indata(dev, dev->sg_src); s5p_set_dma_outdata(dev, dev->sg_dst);
Patches currently in stable-queue which might be from k.konieczny@partner.samsung.com are
queue-4.9/crypto-s5p-sss-fix-kernel-oops-in-aes-ecb-mode.patch