#VU104676 Improper locking in Linux kernel - CVE-2022-49542

Vulnerability identifier: #VU104676

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-2022-49542

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 lpfc_dmp_dbg() function in drivers/scsi/lpfc/lpfc_init.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/09c772557a4fd9490fed1bfb133268313ea22213
https://git.kernel.org/stable/c/271725e4028559ae7974d762a8467dc9de412f2e
https://git.kernel.org/stable/c/cc6501afccec55b8b6c90584cbf71f1fefa77d1e
https://git.kernel.org/stable/c/e294647b1aed4247fe52851f3a3b2b19ae906228

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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.