CVE-2024-46724 is a vulnerability identified in the Linux kernel, specifically within the Direct Rendering Manager (DRM) subsystem for AMD GPUs (amdgpu driver). The issue pertains to an out-of-bounds read error involving the df_v1_7_channel_number. This vulnerability arises because the driver fails to properly validate the fb_channel_number before using it as an index to access an array, leading to a potential out-of-bounds read. Such an error can cause the kernel to read memory outside the intended bounds, which may lead to information disclosure or kernel instability. The vulnerability was addressed by adding a check to ensure the fb_channel_number is within the valid range before accessing the array, thereby preventing the out-of-bounds read. Although no known exploits are currently reported in the wild, the vulnerability affects the Linux kernel versions identified by the commit hash 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, indicating a specific patch or kernel version lineage. The lack of a CVSS score suggests that the vulnerability is newly disclosed and not yet fully assessed for impact severity. The vulnerability is technical and low-level, affecting the kernel's GPU driver, which is critical for systems using AMD graphics hardware under Linux.

For European organizations, the impact of CVE-2024-46724 depends largely on the deployment of Linux systems with AMD GPUs running vulnerable kernel versions. Potential impacts include unauthorized kernel memory disclosure, which could aid attackers in further exploitation or privilege escalation. While this vulnerability does not directly allow code execution or privilege escalation, the out-of-bounds read could destabilize the kernel, leading to denial of service conditions or information leaks. Organizations relying on Linux servers, workstations, or embedded systems with AMD GPUs—such as in scientific computing, media production, or infrastructure monitoring—may be at risk. The impact is more pronounced in environments where kernel integrity and confidentiality are critical, such as financial institutions, government agencies, and critical infrastructure operators in Europe. Since no exploits are known in the wild, the immediate risk is moderate, but the vulnerability should be addressed promptly to prevent future exploitation. The vulnerability could also affect cloud providers and hosting services running Linux with AMD GPUs, potentially impacting European customers.

European organizations should prioritize updating their Linux kernels to versions that include the fix for CVE-2024-46724. Specifically, they should track kernel releases or patches that incorporate the fb_channel_number range validation. System administrators should audit their Linux systems to identify those running AMD GPU drivers and verify kernel versions against the patched commits. In environments where immediate patching is not feasible, organizations can consider temporarily disabling or restricting access to AMD GPU hardware or isolating affected systems to reduce exposure. Monitoring kernel logs for unusual GPU driver errors or crashes may help detect exploitation attempts. Additionally, organizations should maintain robust kernel security hardening practices, including enabling kernel address space layout randomization (KASLR) and other memory protection features. Coordination with Linux distribution vendors for timely patch deployment and testing is critical. Finally, organizations should ensure that their incident response teams are aware of this vulnerability and prepared to respond to any related security incidents.