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 094AB4E36E9; Wed, 30 Sep 2026 16:05:04 +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=1790784307; cv=none; b=djaCpDO/c6BB42xUsUBwpNxw81eT4VsDx/UXVSzghjINkDng2C8S/iv3nIgHMc9zuYNEas+OZri+5qWayzXa7dA2NETiNmAeBvkPEMJ3FRpyv4A5lq8zjrfIn5mdWusJCWFnU2AgzezHA/TfEyCPunmK864dcmQHi1TMRPSlowY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790784307; c=relaxed/simple; bh=Up34UqDI+6c1HIYyCjb6etWO9lRy4mA8QYfE61duaeg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jQUoWHOPqBIPaZAarRQ0F4tTOf8SLh4Ie4/3zG4AfL6YrS7af5CbjzVePede+3TRDFYWsZd6RJ6Ei1Kq5gvw/dWwhdXXG6mV2mVhLUeb7hwNVDWgRolMedPjA5SkaGuHoh4ahmzjZtKXyctiQzyKtym0QYNJtF2m4o9NNV+4iKw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=uyzehRN9; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="uyzehRN9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6D8181F000FF; Wed, 30 Sep 2026 16:05:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790784303; bh=cMrA6wxtWSN0ETyFXTCP0lOEWZVYKfxVhuWeEDo5Ca8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=uyzehRN9IkdTQQgJtt3swCffk6szGI826yHfqOoSMH9QtmxX8ob4tTp6/mNjXf9xZ J6W+SYJcn9ZjvxNr5wzebx4zb/ctgTWO3oUSEHuwjJpLS12lv9cb2WF2lRSbieQvdr 32GFRG/elp/wPJa7PSVWCGbUtTs+2QP+er41ARMY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, ikaros , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 6.1 107/982] ACPICA: validate handler object type in two places Date: Wed, 30 Sep 2026 17:14:03 +0200 Message-ID: <20260930152419.108886583@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152416.775402466@linuxfoundation.org> References: <20260930152416.775402466@linuxfoundation.org> User-Agent: quilt/0.69 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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: ikaros [ Upstream commit c5296da2d516707862f8a2dbb4b515f777e5294f ] 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 Link: https://patch.msgid.link/48111441.fMDQidcC6G@rafael.j.wysocki Signed-off-by: Sasha Levin --- 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 be9a05498adc3..6f16e863a60f3 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 */ -- 2.53.0