Improper locking in Linux kernel dc core driver

1) Improper locking

EUVDB-ID: #VU103032

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-2024-57918

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the remove_all_phantom_planes_for_stream() function in drivers/gpu/drm/amd/display/dc/dml2/dml2_mall_phantom.c, within the dc_state_add_plane(), dc_state_rem_all_planes_for_stream() and dc_state_rem_all_phantom_planes_for_stream() functions in drivers/gpu/drm/amd/display/dc/core/dc_state.c, within the commit_minimal_transition_based_on_current_context() function in drivers/gpu/drm/amd/display/dc/core/dc.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

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

External links

https://git.kernel.org/stable/c/37b8de96ae48c7bb1a17cd5585195c43fcacbe94
https://git.kernel.org/stable/c/7de8d5c90be9ad9f6575e818a674801db2ada794

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.