#VU104646 NULL pointer dereference in Linux kernel - CVE-2022-49214

Vulnerability identifier: #VU104646

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-2022-49214

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 NOKPROBE_SYMBOL() function in arch/powerpc/mm/fault.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/093449bb182db885dae816d62874cccab7a4c42a
https://git.kernel.org/stable/c/4a852ff9b7bea9c640540e2c1bc70bd3ba455d61
https://git.kernel.org/stable/c/a3dae36d632b2cf6eb20314273e512a96cb43c9a
https://git.kernel.org/stable/c/d4679ac8ea2e5078704aa1c026db36580cc1bf9a

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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.