CVE-2025-40293

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel’s iommufd component related to handling dirty tracking. Specifically, a division by zero can occur when pgshift is 63, resulting from an integer overflow during calculations involving bitmap size and page size. This overflow leads to an incorrect index calculation. The issue is addressed by reorganizing the division to avoid the overflow condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.