NULL pointer dereference in Linux kernel drm mxsfb driver

1) NULL pointer dereference

EUVDB-ID: #VU92921

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48718

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 mxsfb_crtc_atomic_enable() function in drivers/gpu/drm/mxsfb/mxsfb_kms.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

CPE2.3

External links

http://git.kernel.org/stable/c/86a337bb803040e4401b87c974a7fb92efe3d0e1
http://git.kernel.org/stable/c/6f9267e01cca749137349d8ffb0d0ebbadf567f4
http://git.kernel.org/stable/c/622c9a3a7868e1eeca39c55305ca3ebec4742b64

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.