CVE-2026-23061
can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak
In the Linux kernel, the following vulnerability has been resolved:
can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak
Fix similar memory leak as in commit 7352e1d5932a ("can: gs_usb:
gs_usb_receive_bulk_callback(): fix URB memory leak").
In kvaser_usb_set_{,data_}bittiming() -> kvaser_usb_setup_rx_urbs(), the
URBs for USB-in transfers are allocated, added to the dev->rx_submitted
anchor and submitted. In the complete callback
kvaser_usb_read_bulk_callback(), the URBs are processed and resubmitted. In
kvaser_usb_remove_interfaces() the URBs are freed by calling
usb_kill_anchored_urbs(&dev->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 usb_kill_anchored_urbs().
Fix the memory leak by anchoring the URB in the
kvaser_usb_read_bulk_callback() to the dev->rx_submitted anchor.
Produtos afetados
Linux · LinuxQuer saber se a sua infraestrutura está exposta a isto?
Falar com a TrueHacking →Referências
https://git.kernel.org/stable/c/248e8e1a125fa875158df521b30f2cc7e27eeeaahttps://git.kernel.org/stable/c/3b1a593eab941c3f32417896cc7df564191f2482https://git.kernel.org/stable/c/40a3334ffda479c63e416e61ff086485e24401f7https://git.kernel.org/stable/c/7c308f7530bffafa994e0aa8dc651a312f4b9ff4https://git.kernel.org/stable/c/94a7fc42e21c7d9d1c49778cd1db52de5df52a01https://git.kernel.org/stable/c/c1b39fa24c140bc616f51fef4175c1743e2bb132https://git.kernel.org/stable/c/d9d824582f2ec76459ffab449e9b05c7bc49645c