#VU104573 NULL pointer dereference in Linux kernel - CVE-2022-49445

Vulnerability identifier: #VU104573

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-2022-49445

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 sh_pfc_map_resources() function in drivers/pinctrl/renesas/core.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/5376e3d904532e657fd7ca1a9b1ff3d351527b90
https://git.kernel.org/stable/c/5ed0519d425619b435150372cce2ffeec71581fa
https://git.kernel.org/stable/c/e3a1ad8fd0ac11f4fa1260c23b5db71a25473254
https://git.kernel.org/stable/c/f991879762392c19661af5b722578089a12b305f
https://git.kernel.org/stable/c/fb4f022b3ad1f3ff3cafdbc7d51896090ae17701

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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.