#VU90594 NULL pointer dereference in Linux kernel - CVE-2024-26728

Vulnerability identifier: #VU90594

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-2024-26728

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 amdgpu_dm_connector_late_register(), amdgpu_dm_connector_funcs_force(), get_modes() and create_eml_sink() functions in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.7, 6.7 rc1, 6.7 rc2, 6.7 rc3, 6.7 rc5, 6.7 rc6, 6.7 rc7, 6.7.1, 6.7.2, 6.7.3, 6.7.4, 6.7.5, 6.7.6, 6.8 rc1, 6.8 rc2, 6.8 rc5

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External links
https://git.kernel.org/stable/c/2d392f7268a1a9bfbd98c831f0f4c964e59aa145
https://git.kernel.org/stable/c/9671761792156f2339627918bafcd713a8a6f777
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.7
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8

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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.