Resource management error in Linux kernel net mdio driver

1) Resource management error

EUVDB-ID: #VU99164

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48961

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to resource management error within the mdio_device_free() and EXPORT_SYMBOL() functions in drivers/net/phy/mdio_device.c, within the of_mdiobus_register_device() function in drivers/net/mdio/of_mdio.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

External links

http://git.kernel.org/stable/c/16854177745a5648f8ec322353b432e18460f43a
http://git.kernel.org/stable/c/a5c6de1a6656b8cc6bce7cb3d9874dd7df4968c3
http://git.kernel.org/stable/c/cb37617687f2bfa5b675df7779f869147c9002bd

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.