PT-2025-34426 · Linux+5 · Linux Kernel+5
Andrei Lalaev
·
Published
2025-01-01
·
Updated
2026-05-26
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CVE-2025-38665
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions:
Linux kernel (affected versions not specified)
Description:
A NULL pointer dereference issue was identified in the Linux kernel’s CAN (Controller Area Network) subsystem. Specifically, the issue occurs within the
can changelink() function when a CAN device is restarted from Bus Off and the driver does not implement the struct can priv::do set mode callback. This can lead to a system crash or unexpected behavior. The fix prevents the NULL pointer deference by refusing a manual restart or configuring the automatic restart delay and reporting the error to user space. Additionally, can restart() now returns an error if can priv::do set mode is not set, preventing an unchecked dereference.Recommendations:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu