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Red Hat: CVE-2019-12819: CVE-2019-12819 kernel: use-after-free in function __mdiobus_register() in drivers/net/phy/mdio_bus.c (Multiple Advisories)

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Red Hat: CVE-2019-12819: CVE-2019-12819 kernel: use-after-free in function __mdiobus_register() in drivers/net/phy/mdio_bus.c (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
06/14/2019
Created
10/30/2020
Added
10/30/2020
Modified
03/13/2024

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • 108768
  • CVE-2019-12819
  • RHSA-2020:1567
  • RHSA-2020:1769

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