NULL pointer dereference in Linux kernel display amdgpu_dm driver

1) NULL pointer dereference

EUVDB-ID: #VU94251

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-2024-39498

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 nv50_msto_cleanup() function in drivers/gpu/drm/nouveau/dispnv50/disp.c, within the intel_mst_enable_dp() function in drivers/gpu/drm/i915/display/intel_dp_mst.c, within the EXPORT_SYMBOL() function in drivers/gpu/drm/display/drm_dp_mst_topology.c, within the dm_helpers_dp_mst_send_payload_allocation() function in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: before 6.10

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/8e21de5f99b2368a5155037ce0aae8aaba3f5241
https://git.kernel.org/stable/c/5a507b7d2be15fddb95bf8dee01110b723e2bcd9
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10

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.