From nobody Fri Jun 12 11:39:12 2026 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 8DC6A3E559F; Fri, 15 May 2026 09:59:28 +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=1778839168; cv=none; b=QAVHBtQJWnV9e7FPk67i3Gql7zDM9lTk4GgZ2dQvuiCyLmLgwS7Z/aAx0KB2e2ckKujI3ZX52QXHwjqD2a+K+IarvT2kz0bEkn3K5cxrwsKyKSiNLzjIpSk7t73dUb1UcEdTX7D+eZ7dr9Udzne82xehwsvJQvF901aTr/Wc1+4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778839168; c=relaxed/simple; bh=RZKorVLA/RcnDxeFyrfedwlLrZI6v+vBwlowopAZQJs=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hnwpLab30PqYnzzdcPRKPgrRCXUPdk7YkFYnsMZLAQvu9LWjvmZzS92CJklDeTBjxEVvTgJJ/zhvuiYc2SQddRGNpuFwbO46GYiuEG5s8zZRBDdIdDRSkwufHwwC24aIfrTcgndnV89QHWqPqq5Maxj4AaTcGbOjSE3vWxVMl8Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF8E6C2BCB0; Fri, 15 May 2026 09:59:26 +0000 (UTC) From: Geert Uytterhoeven To: Sudeep Holla , Cristian Marussi Cc: arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH] firmware: arm_scmi: Fix OOB in scmi_power_name_get() Date: Fri, 15 May 2026 11:59:15 +0200 Message-ID: <75caae28bdffb55199a0bc6cac5df112a966c608.1778838987.git.geert+renesas@glider.be> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- 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 3aa84ceb6d2bab68..4a7215e02dec035d 100644 --- a/drivers/firmware/arm_scmi/power.c +++ b/drivers/firmware/arm_scmi/power.c @@ -204,8 +204,12 @@ scmi_power_name_get(const struct scmi_protocol_handle = *ph, u32 domain) { struct scmi_power_info *pi =3D ph->get_priv(ph); - struct power_dom_info *dom =3D pi->dom_info + domain; + struct power_dom_info *dom; + + if (domain >=3D pi->num_domains) + return "unknown"; =20 + dom =3D pi->dom_info + domain; return dom->name; } =20 --=20 2.43.0