CVE-2025-68343

Summary

In the Linux kernel, the following vulnerability has been resolved:

can: gs_usb: gs_usb_receive_bulk_callback(): check actual_length before accessing header

The driver expects to receive a struct gs_host_frame in gs_usb_receive_bulk_callback().

Use struct_group to describe the header of the struct gs_host_frame and check that we have at least received the header before accessing any members of it.

To resubmit the URB, do not dereference the pointer chain "dev->parent->hf_size_rx" but use "parent->hf_size_rx" instead. Since "urb->context" contains "parent", it is always defined, while "dev" is not defined if the URB it too short.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 18cbce43363c9f84b90a92d57df341155eee0697affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 3433680b759646efcacc64fe36aa2e51ae34b8f0affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 616eee3e895b8ca0028163fcb1dce5e3e9dea322affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < f31693dc3a584c0ad3937e857b59dbc1a7ed2b87affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 6fe9f3279f7d2518439a7962c5870c6e9ecbadcfaffected
LinuxLinux3.16affected
LinuxLinux0 < 3.16unaffected
LinuxLinux6.1.159 <= 6.1.*unaffected
LinuxLinux6.6.119 <= 6.6.*unaffected
LinuxLinux6.12.61 <= 6.12.*unaffected
LinuxLinux6.17.11 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References