CVE-2019-12819
kernel: use-after-free in function __mdiobus_register() in drivers/net/phy/mdio_bus.c
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · June 13, 2019
Updated · June 28, 2026
Description
A use-after-free flaw was found in the Linux kernel's MDIO section of the network management subsystem. An attacker who is able to hot-plug a network device can trigger the __mdiobus_register() function in drivers/net/phy/mdio_bus.c, which can cause a use-after-free condition causing a memory corruption and kernel panic or privilege escalation.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 4.4CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE-416 · Use After Free