#VU104667 Improper locking in Linux kernel - CVE-2022-49379

Vulnerability identifier: #VU104667

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-2022-49379

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 DEFINE_SHOW_ATTRIBUTE(), deferred_probe_timeout_work_func() and driver_probe_done() functions 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/29357883a89193863f3cc6a2c5e0b42ceb022761
https://git.kernel.org/stable/c/4ad6af07efcca85369c21e4897b3020cff2c170b
https://git.kernel.org/stable/c/528229474e1cbb1b3451cb713d94aecb5f6ee264
https://git.kernel.org/stable/c/5ee76c256e928455212ab759c51d198fedbe7523
https://git.kernel.org/stable/c/71cbce75031aed26c72c2dc8a83111d181685f1b

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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.