#VU104314 Memory leak in Linux kernel - CVE-2022-49591

Vulnerability identifier: #VU104314

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-2022-49591

CWE-ID: CWE-401

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 memory leak within the ksz_switch_register() function in drivers/net/dsa/microchip/ksz_common.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

---

External links
https://git.kernel.org/stable/c/4165e02716518bbbe9c9104b39530d40928bc7ce
https://git.kernel.org/stable/c/88ec2ff42da3ac93b2437dc52fe25cd4372148e6
https://git.kernel.org/stable/c/a14bd7475452c51835dd5a0cee4c8fa48dd0b539

---

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.