CVE Catalog

CVE-2026-72346

Low risk· EPSS 10%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

10th percentile - higher than 10% of all known CVEs

Summary

In the Linux kernel, the platform/x86: bitland-mifs-wmi driver has a NULL pointer dereference during suspend/resume. The driver registers two WMI devices: control and event. During probe, the event device path returns early, leaving data->pp_dev as NULL. PM operations are triggered for both devices, leading to NULL dereference in bitland_mifs_wmi_suspend(). The fix adds a validity check for data->pp_dev in suspend and resume callbacks.

Risk Assessment

During system suspend or resume, a kernel Oops may occur, potentially disrupting system operation or causing data loss.

Recommendation

Apply the Linux kernel update containing the fix for CVE-2026-72346. Ensure the bitland-mifs-wmi driver is up to date.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS