Use-after-free vulnerability in __mdiobus_register() function in Linux kernel before 5.0 allows denial of service

CVE-2019-12819 · LOW Severity

AV:L/AC:L/AU:N/C:N/I:N/A:P

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.

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