CVE-2026-23075
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").
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/5a4391bdc6c8357242f62f22069c865b792406b3Patch
- https://git.kernel.org/stable/c/92d26ce07ac3b7a850dc68c8d73d487b39c39b33Patch
- https://git.kernel.org/stable/c/93b34d4ba7266030801a509c088ac77c0d7a12e9Patch
- https://git.kernel.org/stable/c/9d1807b442fc3286b204f8e59981b10e743533cePatch
- https://git.kernel.org/stable/c/a9503ae43256e80db5cba9d449b238607164c51dPatch
- https://git.kernel.org/stable/c/adec5e1f9c99fe079ec4c92cca3f1109a3e257c3Patch
- https://git.kernel.org/stable/c/dc934d96673992af8568664c1b58e13eb164010dPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.