NULL pointer dereference in Linux kernel dc dcn21 driver

1) NULL pointer dereference

EUVDB-ID: #VU90611

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-2024-26662

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 dcn21_set_backlight_level() function in drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hwseq.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/2e150ccea13129eb048679114808eb9770443e4d
http://git.kernel.org/stable/c/0c863cab0e9173f8b6c7bc328bee3b8625f131b5
http://git.kernel.org/stable/c/e96fddb32931d007db12b1fce9b5e8e4c080401b

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.