This is a note to let you know that I've just added the patch titled crypto: ccp - memset request context to zero during import to the 3.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: crypto-ccp-memset-request-context-to-zero-during-import.patch and it can be found in the queue-3.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From ce0ae266feaf35930394bd770c69778e4ef03ba9 Mon Sep 17 00:00:00 2001 From: Tom Lendacky <thomas.lendacky@xxxxxxx> Date: Thu, 25 Feb 2016 16:48:13 -0600 Subject: crypto: ccp - memset request context to zero during import From: Tom Lendacky <thomas.lendacky@xxxxxxx> commit ce0ae266feaf35930394bd770c69778e4ef03ba9 upstream. Since a crypto_ahash_import() can be called against a request context that has not had a crypto_ahash_init() performed, the request context needs to be cleared to insure there is no random data present. If not, the random data can result in a kernel oops during crypto_ahash_update(). Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/crypto/ccp/ccp-crypto-aes-cmac.c | 1 + drivers/crypto/ccp/ccp-crypto-sha.c | 1 + 2 files changed, 2 insertions(+) --- a/drivers/crypto/ccp/ccp-crypto-aes-cmac.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-cmac.c @@ -225,6 +225,7 @@ static int ccp_aes_cmac_import(struct ah /* 'in' may not be aligned so memcpy to local variable */ memcpy(&state, in, sizeof(state)); + memset(rctx, 0, sizeof(*rctx)); rctx->null_msg = state.null_msg; memcpy(rctx->iv, state.iv, sizeof(rctx->iv)); rctx->buf_count = state.buf_count; --- a/drivers/crypto/ccp/ccp-crypto-sha.c +++ b/drivers/crypto/ccp/ccp-crypto-sha.c @@ -283,6 +283,7 @@ static int ccp_sha_import(struct ahash_r /* 'in' may not be aligned so memcpy to local variable */ memcpy(&state, in, sizeof(state)); + memset(rctx, 0, sizeof(*rctx)); rctx->type = state.type; rctx->msg_bits = state.msg_bits; rctx->first = state.first; Patches currently in stable-queue which might be from thomas.lendacky@xxxxxxx are queue-3.14/crypto-ccp-add-hash-state-import-and-export-support.patch queue-3.14/crypto-ccp-don-t-assume-export-import-areas-are-aligned.patch queue-3.14/crypto-ccp-memset-request-context-to-zero-during-import.patch queue-3.14/crypto-ccp-limit-the-amount-of-information-exported.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html