From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 02 Dec 2024 12:10:29 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tI4Jw-0033aj-2R for lore@lore.pengutronix.de; Mon, 02 Dec 2024 12:10:29 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tI4Jw-0006iX-LO for lore@pengutronix.de; Mon, 02 Dec 2024 12:10:29 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=g4nH41bQGEV4AdK6uGrWk74cLEPFxTwk7rkx7lsnHE8=; b=gUW9vFozJv6VI9SsatI36A/Xvl OFYvsnOP3Ky3DEINkR1/vushAT1pZxeE5vNhxQozYy6Wl4V29rMjHwcsHPEO9zk81Memon67NMXzk QH4n+7v6BR6c9miF4Aa5YASdMgwdsVTrFNECwDOUDJBgV2W9gNXbbbiF87iqoF3l7jd1m5Q960Ii1 xO6Ft9uGvaGugV1z8SpFdbPkkkq9QdX580AQlSpqRKht98c6pGtODiWR8UqtUbzqRMZRbtFFGN4Q+ MF+Uh0uEid2wnqdym9pxHHlXFVprk66fb5brT5tG4aRbh/0vIXEEoHafJ1OA5O74+CBvr2b83U8yt ydkmmBgA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tI4JY-00000005pJh-3luC; Mon, 02 Dec 2024 11:10:04 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tI4Ia-00000005opX-1Ju7 for barebox@lists.infradead.org; Mon, 02 Dec 2024 11:09:05 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tI4IY-0006D0-R3; Mon, 02 Dec 2024 12:09:02 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tI4IX-001Hen-2p; Mon, 02 Dec 2024 12:09:02 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tI4IY-002EGN-1t; Mon, 02 Dec 2024 12:09:02 +0100 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20241202081815.3475994-1-a.fatoum@pengutronix.de> References: <20241202081815.3475994-1-a.fatoum@pengutronix.de> Message-Id: <173313774258.531308.9162072749089963163.b4-ty@pengutronix.de> Date: Mon, 02 Dec 2024 12:09:02 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.12.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241202_030904_397663_4ECCDDE2 X-CRM114-Status: UNSURE ( 6.99 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2 0/5] malloc: add options to zero-initialize buffers X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Mon, 02 Dec 2024 09:18:10 +0100, Ahmad Fatoum wrote: > To further harden barebox against attackers, add options to zero > registers on function exit, buffers on malloc and after free as well as > local variables. > > Additionally, TLSF already has sanity checks, which are promoted to > panics with CONFIG_BUG_ON_DATA_CORRUPTION enabled. > > [...] Applied, thanks! [1/5] dlmalloc: add aliases with dl as prefix https://git.pengutronix.de/cgit/barebox/commit/?id=730ac4ad403c (link may not be stable) [2/5] hardening: support zeroing all malloc buffers by default https://git.pengutronix.de/cgit/barebox/commit/?id=0c573b180278 (link may not be stable) [3/5] hardening: support initializing stack variables by default https://git.pengutronix.de/cgit/barebox/commit/?id=30edfb0f99f9 (link may not be stable) [4/5] hardening: support register zeroing on function exit https://git.pengutronix.de/cgit/barebox/commit/?id=4e3aef3e116a (link may not be stable) [5/5] tlsf: panic in asserts if CONFIG_BUG_ON_DATA_CORRUPTION=y https://git.pengutronix.de/cgit/barebox/commit/?id=4b2fd33bf2dd (link may not be stable) Best regards, -- Sascha Hauer