#VU104670 Improper locking in Linux kernel - CVE-2022-49371

Vulnerability identifier: #VU104670

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-2022-49371

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 __device_attach() function in drivers/base/dd.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/34fdd9b7def9d2fcb71bb7b0bc4848dd7313767e
https://git.kernel.org/stable/c/36ee9ffca8ef56c302f2855c4a5fccf61c0c1ada
https://git.kernel.org/stable/c/593b595332bd2d65e1a5c1ae7897996c157f5468
https://git.kernel.org/stable/c/b232b02bf3c205b13a26dcec08e53baddd8e59ed
https://git.kernel.org/stable/c/d53a227bfcd5160ce1b61d9954901968a20651e7
https://git.kernel.org/stable/c/df6de52b80aa3b46f5ac804412355ffe2e1df93e

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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.