PT-2025-43616 · Linux+4 · Linux Kernel+4
CVE-2025-40020
·
Published
2025-09-19
·
Updated
2026-08-30
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the peak usb CAN driver related to a shift-out-of-bounds issue. The driver did not explicitly use a 64-bit constant when shifting bits, which is necessary for PC CAN FD interfaces. This issue has been resolved by using a 64-bit constant when the number of bits used for shifting is 32.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu