CVE-2024-58010 is a vulnerability identified in the Linux kernel specifically affecting the binfmt_flat module on 32-bit systems. The issue arises due to an integer overflow bug in the calculation of the variable "full_data", which is computed as the sum of data_len and the product of relocs (relocation count) and the size of an unsigned long integer. While many size and count parameters are capped at 256MB to prevent overflow, the relocs count was not properly checked, allowing the calculation to exceed the maximum value representable by a 32-bit integer. This integer overflow can lead to incorrect memory allocation or buffer size calculations, potentially causing memory corruption, data integrity issues, or even arbitrary code execution if exploited. The vulnerability is specific to 32-bit Linux kernel environments where the binfmt_flat module is used, which is responsible for handling flat binary executable formats. The bug was resolved by adding proper checks on the relocs count to prevent the overflow condition. No known exploits are currently reported in the wild, and no CVSS score has been assigned yet. The affected versions are identified by a specific commit hash, indicating the issue is tied to certain kernel builds prior to the patch. This vulnerability highlights the risks inherent in low-level kernel code handling executable formats and the importance of rigorous input validation to prevent integer overflows.

For European organizations, the impact of CVE-2024-58010 depends largely on the prevalence of 32-bit Linux systems within their infrastructure. Although 64-bit systems dominate modern deployments, some legacy or embedded systems, industrial control systems, or specialized appliances may still run 32-bit Linux kernels with the binfmt_flat module enabled. Exploitation of this vulnerability could allow attackers to cause memory corruption, leading to system crashes or potentially privilege escalation and arbitrary code execution at the kernel level. This could compromise system confidentiality, integrity, and availability. Organizations relying on legacy Linux systems in sectors such as manufacturing, telecommunications, or critical infrastructure could face operational disruptions or data breaches if this vulnerability is exploited. However, the absence of known exploits and the specificity to 32-bit kernels somewhat limits the immediate widespread risk. Nonetheless, the vulnerability should be addressed promptly to prevent future exploitation, especially in environments where 32-bit Linux systems are still operational.

European organizations should take the following specific actions: 1) Inventory all Linux systems to identify any running 32-bit kernels, particularly those with the binfmt_flat module enabled. 2) Apply the official Linux kernel patches that fix CVE-2024-58010 as soon as they become available, ensuring that the relocs count is properly validated to prevent integer overflow. 3) For embedded or legacy devices where kernel updates are challenging, consider isolating these systems from critical networks or applying compensating controls such as strict access controls and monitoring for anomalous behavior. 4) Conduct thorough testing of updated kernels in staging environments to ensure stability and compatibility. 5) Implement continuous vulnerability management processes to detect and remediate similar low-level kernel vulnerabilities proactively. 6) Educate system administrators about the risks of running outdated 32-bit kernels and encourage migration to supported 64-bit platforms where feasible.