CVE-2025-40020: Linux

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

In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: fix shift-out-of-bounds issue Explicitly uses a 64-bit constant when the number of bits used for its shifting is 32 (which is the case for PC CAN FD interfaces supported by this driver). [mkl: update subject, apply manually]

Affected products

• Linux Linux: from 3.4, before 5.4.300 (fixed in 5.4.300); from 5.5, before 5.10.245 (fixed in 5.10.245); from 5.11, before 5.15.194 (fixed in 5.15.194); from 5.16, before 6.1.155 (fixed in 6.1.155); from 6.2, before 6.6.109 (fixed in 6.6.109); from 6.7, before 6.12.50 (fixed in 6.12.50); …

Published 2025-10-24. Last modified 2026-06-17.