From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 16 Feb 2026 10:17:55 +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 1vrujq-002Gyr-2w for lore@lore.pengutronix.de; Mon, 16 Feb 2026 10:17:55 +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 1vrujn-0007mm-JF for lore@pengutronix.de; Mon, 16 Feb 2026 10:17:55 +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: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yVjsfm4prTlreqFee4b2pG72dJqb/UpBfQY8tFxkXoQ=; b=ylKHPTep2puTX7E27mqS8QWrux lngb0PbNcqLnglUyWJzY1qXMbKe5rVfqYLTpLihZC4pPDjTNtrEfeu6rJkOE+dqgLEDV6LOJuzR27 gpa0C3MJMKsBzVjQXYeQAfsgQi4+960wQuxInZCA2b5koAjF8A3rvCnmTs+/GY0bpqeg1mbMgjN0x WPuFrm53I7DJEetPJe4/vNtYPUT/xjA87B7pNWZpl6ixywt95B93hbprtXowo/7NZXGCu6mwMjnVG BI/9il7hAw01etnG1bXGGGqmkW9qFDgiN81oKSOE1LFPMADbq16JwrnT9SX6D90yP/1UtMM7QnvRa +LxsF1rQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vruit-00000006Eih-0qHY; Mon, 16 Feb 2026 09:16:55 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vruih-00000006ERz-295N for barebox@lists.infradead.org; Mon, 16 Feb 2026 09:16:47 +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 1vruif-0006We-RX; Mon, 16 Feb 2026 10:16:41 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) 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 1vruie-0012XU-0V; Mon, 16 Feb 2026 10:16:41 +0100 Received: from [::1] (helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1vruH0-0000000Eudd-2ivK; Mon, 16 Feb 2026 09:48:06 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum , "Claude Opus 4.6" Date: Mon, 16 Feb 2026 09:44:20 +0100 Message-ID: <20260216084758.3548990-21-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260216084758.3548990-1-a.fatoum@pengutronix.de> References: <20260216084758.3548990-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260216_011643_590416_27656B82 X-CRM114-Status: GOOD ( 10.50 ) 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=-3.9 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH master 20/39] efi: fix out-of-bounds read in device path unknown node printing 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) dev_path_node_unknown() initializes 'value' to point past the 4-byte device path header (type + sub_type + length), but uses Path->length as the loop count. Since Path->length includes the header, the loop reads 4 bytes beyond the node's data. Subtract the header size from the loop bound. Co-Authored-By: Claude Opus 4.6 Signed-off-by: Ahmad Fatoum --- efi/devicepath.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/efi/devicepath.c b/efi/devicepath.c index 8298073572ae..31a509f99e42 100644 --- a/efi/devicepath.c +++ b/efi/devicepath.c @@ -622,7 +622,7 @@ dev_path_node_unknown(struct string *str, const void *dev_path) break; } } - length = Path->length; + length = Path->length - sizeof(struct efi_device_path); for (index = 0; index < length; index++) { if (index == 0) cprintf(str, ",0x"); -- 2.47.3