CVE-2024-57887 is a high-severity use-after-free vulnerability identified in the Linux kernel's DRM (Direct Rendering Manager) subsystem, specifically within the adv7511 driver component responsible for handling the ADV7533 device. The flaw arises due to improper management of the host_node pointer, which is assigned and freed in the adv7533_parse_dt() function but later accessed again in adv7533_attach_dsi(). This leads to a use-after-free condition (CWE-416), where the kernel attempts to use memory that has already been freed, potentially causing memory corruption. The vulnerability was addressed by removing the premature call to of_node_put() in adv7533_parse_dt() and instead invoking it only in the error path of the probe() function and during device removal, ensuring proper lifecycle management of the device tree node references. The CVSS 3.1 base score is 7.8, reflecting a high severity with a vector indicating local attack vector (AV:L), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). Exploitation requires local access with some privileges but no user interaction, and successful exploitation could lead to privilege escalation, arbitrary code execution in kernel context, or system crashes. No known exploits are currently reported in the wild. This vulnerability affects specific versions of the Linux kernel containing the vulnerable adv7511 driver code, which is commonly used in systems that interface with ADV7533 display devices, often embedded or specialized hardware platforms running Linux.

For European organizations, the impact of CVE-2024-57887 can be significant, especially for those relying on Linux-based systems in critical infrastructure, industrial control systems, telecommunications, and embedded devices that utilize the ADV7533 display driver. Successful exploitation could allow attackers with local access to escalate privileges to kernel level, compromising system confidentiality, integrity, and availability. This could lead to unauthorized data access, system manipulation, or denial of service conditions. Given the widespread use of Linux in servers, workstations, and embedded devices across Europe, organizations in sectors such as manufacturing, energy, healthcare, and government could face operational disruptions or data breaches if vulnerable systems are exploited. The requirement for local privileges limits remote exploitation but insider threats or attackers who gain initial foothold through other means could leverage this vulnerability to deepen their access. The absence of known exploits currently reduces immediate risk but also underscores the importance of timely patching to prevent future exploitation as proof-of-concept or exploit code may emerge.

To mitigate CVE-2024-57887, European organizations should: 1) Identify and inventory Linux systems running kernel versions containing the vulnerable adv7511 driver, particularly those interfacing with ADV7533 devices. 2) Apply the official Linux kernel patches that fix the use-after-free condition as soon as they are released and tested in their environment. 3) For embedded or specialized devices where kernel updates are challenging, coordinate with device vendors for firmware or kernel updates addressing this vulnerability. 4) Restrict local access to trusted users only, employing strict access controls and monitoring to reduce the risk of local exploitation. 5) Implement kernel-level security mechanisms such as SELinux or AppArmor to limit the impact of potential kernel exploits. 6) Monitor system logs and security alerts for unusual behavior indicative of exploitation attempts. 7) Maintain a robust vulnerability management process to rapidly respond to new information or exploit developments related to this CVE.