#VU99002 Improper locking in Linux kernel - CVE-2022-48980

Vulnerability identifier: #VU99002

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-2022-48980

CWE-ID: CWE-667

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 improper locking within the sja1105_init_l2_policing() function in drivers/net/dsa/sja1105/sja1105_main.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/5e88c6f4aaa70c542e59e5a9d2244bcc99cd245d
https://git.kernel.org/stable/c/147f3e3d84054117ae6b9bf317ec4fda9f991192
https://git.kernel.org/stable/c/f8bac7f9fdb0017b32157957ffffd490f95faa07

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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.