From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 10FCE477E3D; Wed, 27 May 2026 18:11:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779905523; cv=none; b=GDDhiPbpSdFLO6vPCS/7dLLALQ7ACM0mPTRGCVNMXPVigLu1b7auCgnrekIoDnR6/d58L/Ysnc2GSm1vX5Vm1++qsF1RCYuiXWLJFJQTVYxRk0FiE2ucZM3omonuqWEpu5+wtCcw0afgUViqHOM/1izMjWF8zicOTOGpZXTGNYw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779905523; c=relaxed/simple; bh=u3It9OL/0Fs7vPr23Y6pZRqXl6J0V/1om+9kehL9x6Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=HK/uonvDHXKgRYakv47RYbeYdsZQS1CrCznG2VSTjkmc+oj6pT5Y/oVDfnrz5VhvhCX+Or8SwWxEmGACumvdB8kY6AzEp+TMCFcxhREb7XcJqlQvoDTvpvyM8eicKtvQhLEjGB3eOXuTkzUvy/iixOS4rhk1HLmSKnTvq7VhDl8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jvHROsZf; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jvHROsZf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 693021F000E9; Wed, 27 May 2026 18:11:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779905519; bh=LXxxNNuYiBhKm5CO0mehBmmPXNaMU7NaLnJ6stLmwBg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=jvHROsZfGWBFQJtsqpuL/v9ma1gXwzHCTyhen/Cwgo/VkG4MgQlXtb/1SZ2Ab0xQJ TIdJYZEJ7/WLsZdcjaE8P8QwLLM3XaWR9eIS9PVzsmnAmu/zP/kBuBdJwq+JxmeSEc H5xCxdIZEP8ILzM6dxAA4vO+bb4lxVKBZ3MTvOMAvdDEw3GEV4QBFhrjRZsdIMWKY+ 5vaVWr3htOBx14L6wISt45+yQk91Coqe4edPzS39SKxc/wXCE7AabQTZuebuw/Fuzc bfbH7cbbOT+waEGXMIxIrscZNbPOwR8g7zIF5tnH/fV9+8RIQNUnfuWruA94QrcXgt 6O2Ly5rgy6hAg== From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Saket Dumbre , Pawel Chmielewski Subject: [PATCH v1 18/27] ACPICA: validate handler object type in two places Date: Wed, 27 May 2026 20:03:26 +0200 Message-ID: <48111441.fMDQidcC6G@rafael.j.wysocki> Organization: Linux Kernel Development In-Reply-To: <5998844.DvuYhMxLoT@rafael.j.wysocki> References: <5998844.DvuYhMxLoT@rafael.j.wysocki> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="UTF-8" From: ikaros ACPICA: validate handler object type in acpi_ev_has_default_handler() and acpi_ev_find_region_handler(). Link: https://github.com/acpica/acpica/commit/f6fc648a1389 Signed-off-by: ikaros Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpica/evhandler.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c index 5a35dae945e2..f16c1148e602 100644 --- a/drivers/acpi/acpica/evhandler.c +++ b/drivers/acpi/acpica/evhandler.c @@ -130,6 +130,14 @@ acpi_ev_has_default_handler(struct acpi_namespace_node *node, /* Walk the linked list of handlers for this object */ while (handler_obj) { + + /* Validate handler object type before accessing fields */ + + if (handler_obj->common.type != + ACPI_TYPE_LOCAL_ADDRESS_HANDLER) { + break; + } + if (handler_obj->address_space.space_id == space_id) { if (handler_obj->address_space.handler_flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) { @@ -292,6 +300,9 @@ union acpi_operand_object *acpi_ev_find_region_handler(acpi_adr_space_type /* Walk the handler list for this device */ while (handler_obj) { + if (handler_obj->common.type != ACPI_TYPE_LOCAL_ADDRESS_HANDLER) { + break; + } /* Same space_id indicates a handler is installed */ -- 2.51.0