#VU104642 NULL pointer dereference in Linux kernel - CVE-2022-49187

Vulnerability identifier: #VU104642

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-2022-49187

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 clk_hw_create_clk() function in drivers/clk/clk.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

---

External links
https://git.kernel.org/stable/c/0c1b56df451716ba207bbf59f303473643eee4fd
https://git.kernel.org/stable/c/23f89fe005b105f0dcc55034c13eb89f9b570fac
https://git.kernel.org/stable/c/4be3e4c05d8dd1b83b75652cad88c9e752ec7054
https://git.kernel.org/stable/c/d183f20cf5a7b546d4108e796b98210ceb317579

---

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.