#VU104579 NULL pointer dereference in Linux kernel - CVE-2022-49472

Vulnerability identifier: #VU104579

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-2022-49472

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 kszphy_config_reset(), kszphy_config_init() and kszphy_probe() functions in drivers/net/phy/micrel.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/143878e18001c5a61fcc7ae5c5240323753bb641
https://git.kernel.org/stable/c/1e5fbfc2a6f384e3195446c14bbd3bc298eb88c2
https://git.kernel.org/stable/c/660dfa033ccc9afb032015b6dc76e846bba42cfb
https://git.kernel.org/stable/c/7dcb404662839a4ed1a9703658fee979eb894ca4
https://git.kernel.org/stable/c/91e720b32cba25fa58eaa4c88fe957009cffe9f3
https://git.kernel.org/stable/c/abb5594ae2ba7b82cce85917cc6337ec5d774837
https://git.kernel.org/stable/c/bd219273b4e004a3f853da72e111fc8f81357501
https://git.kernel.org/stable/c/f2ef6f7539c68c6bd6c32323d8845ee102b7c450

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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.