CVE-2026-31527

Summary

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]

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/2b38efc05bf7a8568ec74bfffea0f5cfa62bc01dPatch
• https://git.kernel.org/stable/c/7c02a9bd7d14a89065fcf672b86d8e1d1a41d3b1Patch
• https://git.kernel.org/stable/c/9a6086d2a828dd2ff74cf9abcae456670febd71fPatch
• https://git.kernel.org/stable/c/edee7ee5a14c3b33f6d54641f5af5c5e9180992dPatch
• https://git.kernel.org/stable/c/492349e5e4a369a8b62781100a3ade470bf1ce6b