The Linux kernel's DAMON_LRU_SORT feature lets users configure memory quota targets via the active_mem_bp parameter. If active_mem_bp is set to a value greater than 10000 (e.g., 10002), the cold memory scheme's quota target is calculated as '10000 - active_mem_bp + 2', which can result in zero. This zero value causes a division by zero error in the damos_quota_score() function, leading to a kernel crash (Oops). The vulnerability is addressed by returning an error when a user attempts to start DAMON with an active_mem_bp value exceeding 10000, preventing the division by zero condition.

Exploitation of this vulnerability can cause a kernel crash due to a division by zero error, resulting in a denial of service condition. The issue requires write access to module parameters to trigger, limiting the attack surface. There is no indication of code execution or privilege escalation from the provided data.

A fix is available that prevents setting the active_mem_bp parameter to values greater than 10000 by returning an error. Users should ensure their Linux kernel includes this fix or avoid setting active_mem_bp above 10000. Since the vulnerability requires module parameter write permissions, restricting access to these parameters also mitigates risk.