CVE-2025-40221: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: media: pci: mg4b: fix uninitialized iio scan data Fix potential leak of uninitialized stack data to userspace by ensuring that the `scan` structure is zeroed before use.

Affected products

• Linux Linux: from 6.7, before 6.12.54 (fixed in 6.12.54); from 6.13, before 6.17.4 (fixed in 6.17.4)

Published 2025-12-04. Last modified 2026-06-17.