PT-2025-52759 · Linux+3 · Linux Kernel+3
Published
2025-12-23
·
Updated
2026-05-07
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CVE-2025-68343
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the CAN subsystem, specifically in the
gs usb receive bulk callback() function. The driver incorrectly assumes the presence of a gs host frame structure and attempts to access its members without verifying the received data length. This can lead to a dereference of a null pointer if the received data is too short, potentially causing a system crash or other undefined behavior. The issue arises from accessing the header of the gs host frame structure without checking if the received data is large enough to contain the header. The code was modified to check the actual length before accessing the header and to use parent->hf size rx instead of dev->parent->hf size rx when resubmitting the URB.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu