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 4F471439903; Tue, 21 Jul 2026 22:04:11 +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=1784671452; cv=none; b=QCgA+Op3v8u1bdOLXKgdOUuF6XrQnq6nExrJInZX2urWwRkPVfZz/WyxoWRI0nH1GWTs3mLVKXZ4BcH1bZZPrziQWdgY1sN2WJi8qG7k//4OYDXERywTCNKpD01N5T7qz6+lgH8LNaqjmYZqoJ2sG0Kw/yDkfxvcqr7EO/vAAlI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784671452; c=relaxed/simple; bh=5LPFY+NQ5PgIugHhxvIh0Iv4WBLszFA1wsC9Htl6vL0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rvGYtOa7NPv4NWRn7s7HP3Z53B7fKC9G4lz2aWtTf+q5FPxhVhgka0yAXTF7d0Nvc0OhHJTfy9v3jY5y4OAmO1jYYdec692Juv2UmjYjw/RLtMVTuMNaXdVHdQSdOnr/J4jT/TOW797MhXMW17w4HzBC2KjZUi4rUqDgHjF1TWg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=W8CF3yFC; 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="W8CF3yFC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B45671F000E9; Tue, 21 Jul 2026 22:04:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784671451; bh=t72BsY/k6HIWDeZw5A3EuftK86ppNKhsCIvdmrAa2CI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=W8CF3yFCDZmy4GFYNgx/SZfvLEHoT0fehfqWaP5MCTwHQvA+M96E9wr/e6Etp3Y/a 9OMstfgTU1KmSrM0ZT9MTxdoNlV4oIoV52inYaPx32b+ts8gQwqfHBOHGkjwQxovO2 n00tQDkq+rmS2Z+xxAlj/04XiygTfDRyJ55BBqtM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Geert Uytterhoeven , Cristian Marussi , Sudeep Holla , Sasha Levin Subject: [PATCH 5.15 250/843] firmware: arm_scmi: Fix OOB in scmi_power_name_get() Date: Tue, 21 Jul 2026 17:18:05 +0200 Message-ID: <20260721152411.646385261@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152405.946368001@linuxfoundation.org> References: <20260721152405.946368001@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Geert Uytterhoeven [ Upstream commit f9ef3f66f4b18078e464b7606f9497e4dbeb9905 ] scmi_power_name_get() does not validate the domain number passed by the external caller, which may lead to an out-of-bounds access. Fix this by returning "unknown" for invalid domains, like scmi_reset_name_get() does. Fixes: 76a6550990e296a7 ("firmware: arm_scmi: add initial support for power protocol") Signed-off-by: Geert Uytterhoeven Reviewed-by: Cristian Marussi Link: https://patch.msgid.link/75caae28bdffb55199a0bc6cac5df112a966c608.1778838987.git.geert+renesas@glider.be Signed-off-by: Sudeep Holla Signed-off-by: Sasha Levin --- drivers/firmware/arm_scmi/power.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/arm_scmi/power.c b/drivers/firmware/arm_scmi/power.c index ad2ab080f3443c..0b52b1a4e864b5 100644 --- a/drivers/firmware/arm_scmi/power.c +++ b/drivers/firmware/arm_scmi/power.c @@ -178,8 +178,12 @@ static char *scmi_power_name_get(const struct scmi_protocol_handle *ph, u32 domain) { struct scmi_power_info *pi = ph->get_priv(ph); - struct power_dom_info *dom = pi->dom_info + domain; + struct power_dom_info *dom; + if (domain >= pi->num_domains) + return "unknown"; + + dom = pi->dom_info + domain; return dom->name; } -- 2.53.0