#VU104574 NULL pointer dereference in Linux kernel - CVE-2022-49448

Vulnerability identifier: #VU104574

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-2022-49448

CWE-ID: CWE-476

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 NULL pointer dereference within the bcm_pmb_probe() function in drivers/soc/bcm/bcm63xx/bcm-pmb.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/36339ea7bae4943be01c8e9545e46e334591fecd
https://git.kernel.org/stable/c/5650e103bfc70156001615861fb8aafb3947da6e
https://git.kernel.org/stable/c/b48b98743b568bb219152ba2e15af6ef0d3d8a9b
https://git.kernel.org/stable/c/b4bd2aafacce48db26b0a213d849818d940556dd

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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.