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 8432C372EFA for ; Sat, 15 Aug 2026 06:23:36 +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=1786775017; cv=none; b=FYsqt5cTiAtranGfMvvXwqHF3qBPnZRGu/QoUDZGAV9G/nqbsEIqAOUo6S+rbqxqxyagmYElnbs0wdlYvWs1geizqgcxJNFReUH0GHK6EC7uebr9G9w/2zxmv8KvOugt8bohwc/MFL36tCTQxMtIwjait0yLEsTopANtbO8Y9YE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786775017; c=relaxed/simple; bh=yH91ynZ9ZDG7btxkOWC1zQ6LpgHg978htTNabgPBNnc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=WIy646D+zxf4Y2HkJ3rJU2gKgO0A0i/fSRPbv2d8c9vZC+YTniI04271bEhEObKqqkJOwFHDRAT2p9+lZRyOWh00y8UOpLMnBSfUnmVxn2f3eLhahoilpugJov23ovbcMb8Evz+9VM7swXyg6M6GMs5oqEwm65MqrXlVtoaKivc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hcPKvqdi; 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="hcPKvqdi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ABBE31F000E9; Sat, 15 Aug 2026 06:23:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786775016; bh=k7UAEK6kefOshj/ko4RxDwLXAnPZ2RuREcG4tzB6Jrc=; h=From:To:Cc:Subject:Date:Reply-To; b=hcPKvqdiI5EHplJe5AyTh9IMnNxIbksYhf68IbAjqELWEtZC7MIs4Hkyezz64saQ1 Mfe6n9cxjphpXBEBeqBN44dIGTyJCPhM8vUXts3IsaFWfpNo1/kST4olj5CQTH/yNO Xj12b2d7BARhSIyUia0NaJg3GVMh/WBzDD7P1qOE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72346: platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume Date: Sat, 15 Aug 2026 15:07:05 +0900 Message-ID: <2026081511-CVE-2026-72346-7ac8@gregkh> X-Mailer: git-send-email 2.55.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2639; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=ssS7Jg0OoR8F0AWnzOH6PjMivu4QnDnviAFRzml7Ju0=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDI/Vkp27+ZXW7nhVWXzbbldETsm8F3UW8Y5n48qdU uz8BXQ7YlkYBJkYZMUUWb5s4zm6v+KQopeh7WmYOaxMIEMYuDgFYCKxHQwL2teuXZvEwrR10qsj 6xc+FpzrM2f6fob5Yaa+9yZWFLKzeb314V7+W6d/qco0AA== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume The driver registers two distinct WMI devices: a control device (BITLAND_WMI_CONTROL) and an event device (BITLAND_WMI_EVENT). During the probe phase, the event device handling path returns early before initializing the platform profile device (data->pp_dev), leaving it NULL. However, the PM sleep operations are registered globally for the WMI driver and are triggered for both devices. When entering suspend, the event device invokes bitland_mifs_wmi_suspend(), which passes the uninitialized data->pp_dev (NULL) into laptop_profile_get(). This leads to a NULL pointer dereference inside dev_get_drvdata(), causing a kernel Oops and halting the suspend sequence. Fix this by adding a validity check for data->pp_dev in both the suspend and resume callbacks, safely skipping profile operations for the event device. The Linux kernel CVE team has assigned CVE-2026-72346 to this issue. Affected and fixed versions =========================== Issue introduced in 7.1 with commit dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e and fixed in 7.1.5 with commit 6f2cb20d8e286218d51754f06ee219d8ce754b18 Issue introduced in 7.1 with commit dc1ec4fa86b2b8bba2b6122f2b4420217b5bae9e and fixed in 7.2-rc3 with commit d3666875c75eb1bc8090343fa0d6fc8fb7924356 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-72346 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/platform/x86/bitland-mifs-wmi.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/6f2cb20d8e286218d51754f06ee219d8ce754b18 https://git.kernel.org/stable/c/d3666875c75eb1bc8090343fa0d6fc8fb7924356