CVE-2026-23031

Summary

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

can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak

In gs_can_open(), the URBs for USB-in transfers are allocated, added to the parent->rx_submitted anchor and submitted. In the complete callback gs_usb_receive_bulk_callback(), the URB is processed and resubmitted. In gs_can_close() the URBs are freed by calling usb_kill_anchored_urbs(parent->rx_submitted).

However, this does not take into account that the USB framework unanchors the URB before the complete function is called. This means that once an in-URB has been completed, it is no longer anchored and is ultimately not released in gs_can_close().

Fix the memory leak by anchoring the URB in the gs_usb_receive_bulk_callback() to the parent->rx_submitted anchor.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 9c151898cc259a7784be60ba38664f42ede39b31affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < ec5ccc2af9e5b045671f3f604b57512feda8bcc5affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < f905bcfa971edb89e398c98957838d8c6381c0c7affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 08624b7206ddb9148eeffc2384ebda2c47b6d1e9affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 9f669a38ca70839229b7ba0f851820850a2fe1f7affected
LinuxLinuxd08e973a77d128b25e01a08c34d89593fdf222da < 7352e1d5932a0e777e39fa4b619801191f57e603affected
LinuxLinux3.16affected
LinuxLinux0 < 3.16unaffected
LinuxLinux5.15.203 <= 5.15.*unaffected
LinuxLinux6.1.162 <= 6.1.*unaffected
LinuxLinux6.6.122 <= 6.6.*unaffected
LinuxLinux6.12.67 <= 6.12.*unaffected
LinuxLinux6.18.7 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

Additional References

References