#VU99162 Resource management error in Linux kernel - CVE-2022-49016

Vulnerability identifier: #VU99162

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49016

CWE-ID: CWE-399

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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 phy_mdio_device_free() function in drivers/net/phy/phy_device.c, within the fwnode_mdiobus_register_phy() function in drivers/net/mdio/fwnode_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

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External links
https://git.kernel.org/stable/c/543d917f691ab06885ee779c862065899eaa4251
https://git.kernel.org/stable/c/2708b357440427d6a9fee667eb7b8307f4625adc
https://git.kernel.org/stable/c/cdde1560118f82498fc9e9a7c1ef7f0ef7755891

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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.