From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 74B4A7BB01; Wed, 21 Feb 2024 13:17:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521453; cv=none; b=Zu/mIlIFKNtCfRLikz19uYCGrA7z+f9g8RQMCZZoH5Cxg5Kk/c+vWSJv17Qgb8OHdlffB7COHjHDHsxLcVchqqiJ+qroqyr7ZdJkEOdzqpUnC2+ZGqvd9Ir1yQTW4bLE/Z3ckgoGGCqQ0xhLmCtNsHgjgo5LwoDyv7r0xU4ZyMs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708521453; c=relaxed/simple; bh=GY04X0Fz5lmuseDgAm3d1RuPHEykwowQS+Irnhk9/Oc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pReEWtBXFc7HbQTLViqQzCEYmcIlgwjkB3miQXfiTkAxOix4kOEuO7wD+cI25rBTPYd53IQ8s0Qk0MENTsjdozFZmLbGmq5kxpHv+CHkvR4G0uRupCnEbGeveCAxrSpOJfusVRl4OKu82M3ib2kyyRsys2BHmZEfYbYJuYQQ7P8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GkRLcOGZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="GkRLcOGZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D434CC433C7; Wed, 21 Feb 2024 13:17:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708521453; bh=GY04X0Fz5lmuseDgAm3d1RuPHEykwowQS+Irnhk9/Oc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GkRLcOGZ3VJEv/vJDdF9D/abBy6lONhZFK7qsYwZBYOG1u+J1rI29baELbAPcx3Jv cAJsJB+6pR17MXZTWtE2VKlBbU+tJwVEyQz6qvr8biv41lOx7NSfAGaDtDYAx08/zj ihakYPUc83W35R3gp/Ex5q9XVsSKYezVL35EtEF8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Justin Tee , Himanshu Madhani , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 4.19 075/202] scsi: lpfc: Fix possible file string name overflow when updating firmware Date: Wed, 21 Feb 2024 14:06:16 +0100 Message-ID: <20240221125934.238862144@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221125931.742034354@linuxfoundation.org> References: <20240221125931.742034354@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Justin Tee [ Upstream commit f5779b529240b715f0e358489ad0ed933bf77c97 ] Because file_name and phba->ModelName are both declared a size 80 bytes, the extra ".grp" file extension could cause an overflow into file_name. Define a ELX_FW_NAME_SIZE macro with value 84. 84 incorporates the 4 extra characters from ".grp". file_name is changed to be declared as a char and initialized to zeros i.e. null chars. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20231031191224.150862-3-justintee8345@gmail.com Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/lpfc/lpfc.h | 1 + drivers/scsi/lpfc/lpfc_init.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 706aca3f7c25..53b661793268 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -32,6 +32,7 @@ struct lpfc_sli2_slim; #define ELX_MODEL_NAME_SIZE 80 +#define ELX_FW_NAME_SIZE 84 #define LPFC_PCI_DEV_LP 0x1 #define LPFC_PCI_DEV_OC 0x2 diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index c6caacaa3e7a..7db4e893e10e 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -11428,7 +11428,7 @@ lpfc_write_firmware(const struct firmware *fw, void *context) int lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade) { - uint8_t file_name[ELX_MODEL_NAME_SIZE]; + char file_name[ELX_FW_NAME_SIZE] = {0}; int ret; const struct firmware *fw; @@ -11437,7 +11437,7 @@ lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade) LPFC_SLI_INTF_IF_TYPE_2) return -EPERM; - snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName); + scnprintf(file_name, sizeof(file_name), "%s.grp", phba->ModelName); if (fw_upgrade == INT_FW_UPGRADE) { ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG, -- 2.43.0