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Use After Free Affecting kernel-uek package, versions <0:4.14.35-1902.303.4.1.el7uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.07% (35th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEK-2574830
  • published10 Apr 2022
  • disclosed14 Jun 2019
Report a new vulnerability Found a mistake?

Introduced: 14 Jun 2019

CVE-2019-12819  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek to version 0:4.14.35-1902.303.4.1.el7uek or higher.
This issue was patched in ELSA-2020-5715.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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.

References