Vulnerability in Linux

CVE-2025-40293

In the Linux kernel, the following vulnerability has been resolved: iommufd: Don't overflow during division for dirty tracking If pgshift is 63 then BITS_PER_TYPE(*bitmap->bitmap) * pgsize will overflow to 0 and this triggers divide by 0. In this case the index should just be 0, so reorganize things to divide by shift and avoid hitting any overflows.

EPSS: 0.002 (7.7th percentile) — read the EPSS interpretation.

Affected products

  • Linux — versions 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1, 6.1, 0

References