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CVE-2019-12819

Description

An issue was discovered in the Linux kernel before 5.0. The function __mdiobus_register() in drivers/net/phy/mdio_bus.c calls put_device(), which will trigger a fixed_mdio_bus_init use-after-free. This will cause a denial of service.

POC

Reference

- http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html

- https://usn.ubuntu.com/4118-1/

Github

No PoCs found on GitHub currently.