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 68B2248A2A8; Sat, 28 Feb 2026 17:40:46 +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=1772300446; cv=none; b=qSdmSsBEsRI2eFwN0O4pydKgfV6nvtUMg4OlkjH1vtipFNvWL1exwDZTqGPaP4cSgZAxPLyIeGh8Ik7/VTD9InNr8RFonWT/TApiBqGBW7GoarSlF0b17FAfSB0IwfwuLorcM7h6NlisPgzEhycfxz8JVJIGhjqQe5DRn4ECPv8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772300446; c=relaxed/simple; bh=yH2Z9AcWUq5d8W1YQjCN4M2P2vtr+m3C/YvoCnfwbgA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LyZqSKxJycJyRn2Tp+ovDruqz0JY3azi36/C+dJbp13bdd7Xosppuk+tQcL8rrnWHdf/X6ZN2mJatAwWdY/L+DEF9fQnDItDJd9fSrPIrY+q/LSfBe0pxqyrt7p6we1yYCl5I6Q2slFL1u97UPKVc7fTbB1w4hGANy/L0Rfaw10= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fvC2q0o5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fvC2q0o5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4FDAC19425; Sat, 28 Feb 2026 17:40:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772300446; bh=yH2Z9AcWUq5d8W1YQjCN4M2P2vtr+m3C/YvoCnfwbgA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fvC2q0o5Yet7GDChn8tVvCMOwQZ628MdD2ATCdZoUesjDY9b6exUjBURBA4BBdeDW fG6Aye0hifINY+YY4Su7JOgT0j6gwm/HvsJUxxyBuIMaq/J5mrGlmKNlnyLMNNibyX 3qYz8VAthkA/xPi+fNgd3G5rukx+/kt6r6tAMKzcu1vUhTwW2FNM1EuKjiShl6XbxR 7HBxo5+sjQ4OBBJ0qvge2iXlgZgqnbpdTAiaUysw4qTBW59+0ogVK+y7+J/2oE4zwT MIeSzSj8pIfS4JjhNg0z8AIwcTpzyOUuDQHcp8/z6tDNMf1TA+Xa8quFLpz5BTDxA6 TcchNOxXnN5ig== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kamal Heib , Leon Romanovsky , Sasha Levin Subject: [PATCH 6.19 486/844] RDMA/ionic: Fix potential NULL pointer dereference in ionic_query_port Date: Sat, 28 Feb 2026 12:26:39 -0500 Message-ID: <20260228173244.1509663-487-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228173244.1509663-1-sashal@kernel.org> References: <20260228173244.1509663-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Kamal Heib [ Upstream commit fd80bd7105f88189f47d465ca8cb7d115570de30 ] The function ionic_query_port() calls ib_device_get_netdev() without checking the return value which could lead to NULL pointer dereference, Fix it by checking the return value and return -ENODEV if the 'ndev' is NULL. Fixes: 2075bbe8ef03 ("RDMA/ionic: Register device ops for miscellaneous functionality") Signed-off-by: Kamal Heib Link: https://patch.msgid.link/20260220222125.16973-2-kheib@redhat.com Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/ionic/ionic_ibdev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.c b/drivers/infiniband/hw/ionic/ionic_ibdev.c index 164046d00e5d4..bd4c73e530d08 100644 --- a/drivers/infiniband/hw/ionic/ionic_ibdev.c +++ b/drivers/infiniband/hw/ionic/ionic_ibdev.c @@ -81,6 +81,8 @@ static int ionic_query_port(struct ib_device *ibdev, u32 port, return -EINVAL; ndev = ib_device_get_netdev(ibdev, port); + if (!ndev) + return -ENODEV; if (netif_running(ndev) && netif_carrier_ok(ndev)) { attr->state = IB_PORT_ACTIVE; -- 2.51.0