From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B34973FC5B1; Wed, 20 May 2026 18:42:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779302573; cv=none; b=ufftOte7Go6U5x0usd8Cpwmlij6mu7L3FpNQfFQoLOs0d/AeJhjlKnHL8C70NGbaJKHxMGJ8Me/xoKxuw1Ocr/vVm0sGR6TAVepIgTsyBN32OZI2cUZzQH1APMbjla/ujsY3SGo95WN7KSiFt1OQfPxNqKyB69HTiwEyo+9eWFk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779302573; c=relaxed/simple; bh=AaMdk4L2eKOq0Y0QjnXDfxLtOp750A2XyFL2hkcIC/c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iCmC5A5mGq8v8iiod0rTbZgjzPyZibsiyCiHb3a8a2o2/wGkyC/jrGzS56FohckG4FS2+LCC/czrHXM/uNBexSGhbR0nYL9Xvx45q0BKT0qTxVV+qtd8TkJ6wTWp4tyv9QHKXsUiZsuepmiKOx3TGxFoW9A24unvmQrNH3LwTxo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sRdmWUDY; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sRdmWUDY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F3321F000E9; Wed, 20 May 2026 18:42:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779302572; bh=zmOlqkI3GPrRwmlBxV6TOTw7VFgGtFBSN/JnTet/NX4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=sRdmWUDYcvo4ugyZn3tkVQkwBvoumZnb/yDrs6bxTK1viR/HQ/X1WVUmHqxlQlGJd 05OJval3Kd8SfQTJILcceLhQIVI7jxZCUwH3DyUzBUO0QvPnxCy4ctaC3saAxopY/r BAUBJzhJpAekZPsayfWYhrfAWTpLLod0tPqmzK2g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paul Moses , Tom Lendacky , Herbert Xu , Sasha Levin Subject: [PATCH 6.6 301/508] crypto: ccp - copy IV using skcipher ivsize Date: Wed, 20 May 2026 18:22:04 +0200 Message-ID: <20260520162105.164038110@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162058.573354582@linuxfoundation.org> References: <20260520162058.573354582@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Moses [ Upstream commit a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 ] AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver. ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte IV, so the restore overruns the provided buffer. Use crypto_skcipher_ivsize() to copy only the algorithm's IV length. Fixes: 2b789435d7f3 ("crypto: ccp - CCP AES crypto API support") Signed-off-by: Paul Moses Reviewed-by: Tom Lendacky Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/ccp/ccp-crypto-aes.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/ccp/ccp-crypto-aes.c b/drivers/crypto/ccp/ccp-crypto-aes.c index 918e223f21b65..5a48155ea796a 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes.c +++ b/drivers/crypto/ccp/ccp-crypto-aes.c @@ -29,8 +29,11 @@ static int ccp_aes_complete(struct crypto_async_request *async_req, int ret) if (ret) return ret; - if (ctx->u.aes.mode != CCP_AES_MODE_ECB) - memcpy(req->iv, rctx->iv, AES_BLOCK_SIZE); + if (ctx->u.aes.mode != CCP_AES_MODE_ECB) { + size_t ivsize = crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req)); + + memcpy(req->iv, rctx->iv, ivsize); + } return 0; } -- 2.53.0