From patchwork Wed Mar 6 06:12:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13583387 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1433DC54E49 for ; Wed, 6 Mar 2024 06:13:53 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rhkWW-0005BI-H5; Wed, 06 Mar 2024 01:13:04 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rhkWN-00050A-FQ for qemu-devel@nongnu.org; Wed, 06 Mar 2024 01:12:58 -0500 Received: from mail-pg1-x530.google.com ([2607:f8b0:4864:20::530]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rhkWK-0006Gx-Jp for qemu-devel@nongnu.org; Wed, 06 Mar 2024 01:12:54 -0500 Received: by mail-pg1-x530.google.com with SMTP id 41be03b00d2f7-517ab9a4a13so5715309a12.1 for ; Tue, 05 Mar 2024 22:12:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1709705571; x=1710310371; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=DgfW3dC2BQFvXbkrpvVsfPqRuCKLeW6kZAejsXMFwME=; b=qKgJT6tJBenYKV/gKCcrjC65DtOu3QzamAcWWiuuvIO8yED737641YHBsMxNM/ABwQ rLTNkTf52zo+VIbayQJM1mBMYTo9Ga2r6YsZU8YVMSGaky+GCuOVjTbcl56zPngY3wrI 2woUgK/mXlNO2ix8jLQf7Tgdk6ZgzThwqDSCrpGYxwTPNgRqAnXpAKBTUMJ4QUx+fKf1 VdRQpCIB5kq83V7eDVPeXRTPkC31PO6FnW7oy9gAUzFR9OyqWOCC4EB297M4KYYSDxP+ SBs2CTSl1+KBPEUZ1A+DgRf0TcImwatR8Q08lb1WZPHOw2YYIWyABSE841qZmhv4DeuV Wa1Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709705571; x=1710310371; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=DgfW3dC2BQFvXbkrpvVsfPqRuCKLeW6kZAejsXMFwME=; b=q3I0Cs3jLM0fYgFuir6N5WXNWuZqwRq3Rj0+YlVA6G6a7suOQKk0VMNC07BBqi3o0v iXfiAMcTLAufpe8KjB85EyiqZNYrDUCD89N3GnK5ay4ix62+BgnVJn+3lt+jh7LDFmZv U8J+MH4Vk6Q1UPMdYLJG1QFU2Yyn2ZGqMLPkjcw9m7aVoosrgVWDy9huRtVF7UqYLaYc QGXc6VMxCPN87NFXXJQKs8i+EIvNjDeQi9FkljtBboBKrGPmb/nieotEC1q/WYinEO8b cVyRc43b9sTdPTbTST124FelCxodX8WIVBAjstA8YCnuPAfG286iCpYnjdJHAC1bkI9h Pflw== X-Gm-Message-State: AOJu0YxAAnQNeSjBqhtCXSSHbCJ0mnl7cGXhldWUSJJCnRAixthy1DUt 1NPdueCmhy+L5kqYprjS1uw5X7eDrrEQPUMP1QKsVzN7EblCoRFQlFQq6mOwdFk= X-Google-Smtp-Source: AGHT+IEEa7xDE0YMz/BAUAx9C4fmbda+pIxEjgTxSSJkPUNQGHgjGIj6XPoa3TKJMsk13zPEJtg8vg== X-Received: by 2002:a17:90a:a08d:b0:29a:cc76:2346 with SMTP id r13-20020a17090aa08d00b0029acc762346mr12162113pjp.24.1709705570899; Tue, 05 Mar 2024 22:12:50 -0800 (PST) Received: from localhost ([157.82.206.27]) by smtp.gmail.com with UTF8SMTPSA id m2-20020a17090a858200b002997a5eea5bsm10474861pjn.31.2024.03.05.22.12.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 05 Mar 2024 22:12:50 -0800 (PST) From: Akihiko Odaki Date: Wed, 06 Mar 2024 15:12:18 +0900 Subject: [PATCH v3 12/19] contrib/elf2dmp: Ensure segment fits in file MIME-Version: 1.0 Message-Id: <20240306-elf2dmp-v3-12-d74e6c3da49c@daynix.com> References: <20240306-elf2dmp-v3-0-d74e6c3da49c@daynix.com> In-Reply-To: <20240306-elf2dmp-v3-0-d74e6c3da49c@daynix.com> To: Viktor Prutyanov , Peter Maydell Cc: qemu-devel@nongnu.org, Akihiko Odaki X-Mailer: b4 0.12.3 Received-SPF: none client-ip=2607:f8b0:4864:20::530; envelope-from=akihiko.odaki@daynix.com; helo=mail-pg1-x530.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This makes elf2dmp more robust against corrupted inputs. Signed-off-by: Akihiko Odaki Reviewed-by: Peter Maydell --- contrib/elf2dmp/addrspace.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/contrib/elf2dmp/addrspace.c b/contrib/elf2dmp/addrspace.c index e01860d15b07..81295a11534a 100644 --- a/contrib/elf2dmp/addrspace.c +++ b/contrib/elf2dmp/addrspace.c @@ -88,11 +88,12 @@ void pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf) ps->block = g_new(struct pa_block, ps->block_nr); for (i = 0; i < phdr_nr; i++) { - if (phdr[i].p_type == PT_LOAD) { + if (phdr[i].p_type == PT_LOAD && phdr[i].p_offset < qemu_elf->size) { ps->block[block_i] = (struct pa_block) { .addr = (uint8_t *)qemu_elf->map + phdr[i].p_offset, .paddr = phdr[i].p_paddr, - .size = phdr[i].p_filesz, + .size = MIN(phdr[i].p_filesz, + qemu_elf->size - phdr[i].p_offset), }; pa_block_align(&ps->block[block_i]); block_i = ps->block[block_i].size ? (block_i + 1) : block_i;