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.
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Primary | 3.1 | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Hyperlink | Source | Resource |
|---|---|---|
| https://git.kernel.org/stable/c/248e8e1a125fa875158df521b30f2cc7e27eeeaa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/3b1a593eab941c3f32417896cc7df564191f2482 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/40a3334ffda479c63e416e61ff086485e24401f7 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/7c308f7530bffafa994e0aa8dc651a312f4b9ff4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/94a7fc42e21c7d9d1c49778cd1db52de5df52a01 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/c1b39fa24c140bc616f51fef4175c1743e2bb132 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/d9d824582f2ec76459ffab449e9b05c7bc49645c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |