NULL pointer dereference in Linux kernel link protocols driver

1) NULL pointer dereference

EUVDB-ID: #VU90522

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-2024-27040

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 edp_set_replay_allow_active() function in drivers/gpu/drm/amd/display/dc/link/protocols/link_edp_panel_control.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

http://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8
http://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7
http://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3
http://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b

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.