From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF0A6C17440 for ; Sun, 10 Nov 2019 02:50:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B9EC4225AD for ; Sun, 10 Nov 2019 02:50:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573354217; bh=SbUN0yYZmzZAvFPcXi0mVND1v/e7vZHcGEaSQBWDqX8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=LkweCRpzOQ6c11Zv0O20jVNVN1F516wlK4UqEIJ+ONQLd0XtPCGARRntd71GQSDWQ VrD37Pk2vsgOcujleh4o2/XxPhkOpZUKlYsUq5LZLJXs6TezY8sI5dKH6d2IyDyHmj n5joDgEUZtpsm68MplBql8vwc7bE7/qXu04C3rQ8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729663AbfKJCuR (ORCPT ); Sat, 9 Nov 2019 21:50:17 -0500 Received: from mail.kernel.org ([198.145.29.99]:33316 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728517AbfKJCuQ (ORCPT ); Sat, 9 Nov 2019 21:50:16 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id DBA0E229EF; Sun, 10 Nov 2019 02:50:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573354215; bh=SbUN0yYZmzZAvFPcXi0mVND1v/e7vZHcGEaSQBWDqX8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IsCsycMFTxQPXQpaGzznz1cSjrDPjJxtohI52dLmsrzVgAve+qRvpkhmMok3hu6Rk bTaWxwD3pvCSZ0GNG6pLFwrzDD9+Xwliuv5G0N7jbbZm0wj/9MqdmLWxsGH9j9GT7i qmNXEtSSmm3c7w7JwdrA6ySoL30geJSOLyn6Uccw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dan Aloni , Herbert Xu , linux-crypto@vger.kernel.org, "David S. Miller" , Sasha Levin Subject: [PATCH AUTOSEL 4.9 54/66] crypto: fix a memory leak in rsa-kcs1pad's encryption mode Date: Sat, 9 Nov 2019 21:48:33 -0500 Message-Id: <20191110024846.32598-54-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191110024846.32598-1-sashal@kernel.org> References: <20191110024846.32598-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dan Aloni [ Upstream commit 3944f139d5592790b70bc64f197162e643a8512b ] The encryption mode of pkcs1pad never uses out_sg and out_buf, so there's no need to allocate the buffer, which presently is not even being freed. CC: Herbert Xu CC: linux-crypto@vger.kernel.org CC: "David S. Miller" Signed-off-by: Dan Aloni Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- crypto/rsa-pkcs1pad.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c index 7830d304dff6f..d58224d808675 100644 --- a/crypto/rsa-pkcs1pad.c +++ b/crypto/rsa-pkcs1pad.c @@ -267,15 +267,6 @@ static int pkcs1pad_encrypt(struct akcipher_request *req) pkcs1pad_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf, ctx->key_size - 1 - req->src_len, req->src); - req_ctx->out_buf = kmalloc(ctx->key_size, GFP_KERNEL); - if (!req_ctx->out_buf) { - kfree(req_ctx->in_buf); - return -ENOMEM; - } - - pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf, - ctx->key_size, NULL); - akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, pkcs1pad_encrypt_sign_complete_cb, req); -- 2.20.1