CVE-2026-31527

Published: April 23, 2026Last modified: April 23, 2026

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]

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References

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