CVE-2026-23075

Description

In the Linux kernel, the following vulnerability has been resolved: can: esd_usb: esd_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 esd_usb_open(), the URBs for USB-in transfers are allocated, added to the dev->rx_submitted anchor and submitted. In the complete callback esd_usb_read_bulk_callback(), the URBs are processed and resubmitted. In esd_usb_close() 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 esd_usb_close(). Fix the memory leak by anchoring the URB in the esd_usb_read_bulk_callback() to the dev->rx_submitted anchor.

PUBLISHED Reserved 2026-01-13 | Published 2026-02-04 | Updated 2026-02-09 | Assigner Linux

Product status

References

git.kernel.org/...c/93b34d4ba7266030801a509c088ac77c0d7a12e9

git.kernel.org/...c/dc934d96673992af8568664c1b58e13eb164010d

git.kernel.org/...c/92d26ce07ac3b7a850dc68c8d73d487b39c39b33

git.kernel.org/...c/adec5e1f9c99fe079ec4c92cca3f1109a3e257c3

git.kernel.org/...c/9d1807b442fc3286b204f8e59981b10e743533ce

git.kernel.org/...c/a9503ae43256e80db5cba9d449b238607164c51d

git.kernel.org/...c/5a4391bdc6c8357242f62f22069c865b792406b3

cve.org (CVE-2026-23075)

nvd.nist.gov (CVE-2026-23075)

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