#VU104657 Improper locking in Linux kernel - CVE-2022-49443

Vulnerability identifier: #VU104657

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-2022-49443

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 include/linux/list.h. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.18, 5.18 rc1, 5.18 rc2, 5.18 rc3, 5.18 rc5, 5.18 rc6, 5.18 rc7, 5.18 rc8, 5.18.1, 5.18.2

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External links
https://git.kernel.org/stable/c/5d5d993f16be15d124be7b8ec71b28ef7b7dc3af
https://git.kernel.org/stable/c/cb3e48f7a35033deb9455abe3932e63cb500b9eb
https://git.kernel.org/stable/c/d679ae94fdd5d3ab00c35078f5af5f37e068b03d
https://git.kernel.org/stable/c/e039c0b5985999b150594126225e1ee51df7b4c9
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.3

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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.