# CVE-2026-72346: platform/x86: bitland-mifs-wmi: Fix NULL pointer dereference during suspend/resume

> A NULL pointer dereference in the Linux kernel bitland-mifs-wmi driver causes a system crash during suspend/resume, requiring a kernel patch.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Aug 2026
- **Updated:** 17 Aug 2026
- **Also known as:** DEBIAN-CVE-2026-72346, GHSA-xmxv-96vw-vwqc, UBUNTU-CVE-2026-72346

## What is CVE-2026-72346?

CVE-2026-72346 is a vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official 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.

## Which versions are affected by CVE-2026-72346?


## How do I fix CVE-2026-72346?

Apply the vendor's patch.

## Is CVE-2026-72346 being exploited?

There is no known exploitation of CVE-2026-72346 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-72346 and fix it if it is affected.

What it is: CVE-2026-72346 is a vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-72346 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-72346/ (Markdown: https://insights.sbomify.com/CVE-2026-72346/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-72346
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-72346
- OSV: https://osv.dev/vulnerability/CVE-2026-72346

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-72346/
Summaries are generated and may contain mistakes; the official description above is the record.