CVE-2024-42102

A vulnerability was found in the wb_dirty_limits() function in the Linux kernel, where a removed (u64) cast in the dtc->wb_thresh * dtc->bg_thresh operation can result in multiplication overflow on 32-bit architectures. This issue could lead to memory corruption or performance issues.

Red Hat rates this as Moderate severity with an Attack Complexity rating of High, given that an attacker needs to be able to create enough dirty data (data not yet written to disk) in memory to cause the multiplication overflow, something which is more likely to be effective on systems with just 4GB of RAM, and would require the attacker to have this information about a given system when targeting their attack for a higher likelihood of success.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.