PT-2019-5418 · Linux+5 · Linux Kernel+5
Published
2019-02-22
·
Updated
2021-05-28
·
CVE-2019-12819
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.0
Description
An issue in the Linux kernel is related to a use-after-free vulnerability in the
mdiobus register() function, located in drivers/net/phy/mdio bus.c. This function calls put device(), which triggers a use-after-free of fix mdio bus init, resulting in a denial of service. The vulnerability can be exploited to cause a service disruption.Recommendations
For Linux kernel versions prior to 5.0, update to version 5.0 or later to resolve the issue.
As a temporary workaround, consider restricting access to the
mdiobus register() function until a patch is available.Fix
DoS
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu