#VU93327 NULL pointer dereference in Linux kernel - CVE-2022-48772

Vulnerability identifier: #VU93327

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-2022-48772

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 lgdt3306a_probe() function in drivers/media/dvb-frontends/lgdt3306a.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/8915dcd29a82096acacf54364a8425363782aea0
https://git.kernel.org/stable/c/b479fd59a1f4a342b69fce34f222d93bf791dca4
https://git.kernel.org/stable/c/526238d32c3acc3d597fd8c9a34652bfe9086cea
https://git.kernel.org/stable/c/d082757b8359201c3864323cea4b91ea30a1e676
https://git.kernel.org/stable/c/7d12e918f2994c883f41f22552a61b9310fa1e87
https://git.kernel.org/stable/c/8e1e00718d0d9dd83337300572561e30b9c0d115
https://git.kernel.org/stable/c/c1115ddbda9c930fba0fdd062e7a8873ebaf898d

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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.