CVE-2026-23108
can: usb_8dev: usb_8dev_read_bulk_callback(): fix URB memory leak
Description
In the Linux kernel, the following vulnerability has been resolved: can: usb_8dev: usb_8dev_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 usb_8dev_open() -> usb_8dev_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback usb_8dev_read_bulk_callback(), the URBs are processed and resubmitted. In usb_8dev_close() -> unlink_all_urbs() the URBs are freed by calling usb_kill_anchored_urbs(&priv->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 usb_8dev_read_bulk_callback() to the priv->rx_submitted anchor.
INFO
Published Date :
Feb. 4, 2026, 5:16 p.m.
Last Modified :
March 18, 2026, 5:12 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Anchor the URB in usb_8dev_read_bulk_callback.
- Resubmit URBs after processing.
- Ensure URBs are released in usb_kill_anchored_urbs.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23108.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23108 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23108
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23108 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23108 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 18, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.199 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.122 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.68 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.8 *cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.9 up to (excluding) 5.10.249 Added Reference Type kernel.org: https://git.kernel.org/stable/c/07e9373739c6388af9d99797cdb2e79dbbcbe92b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/59ff56992bba28051ad67cd8cc7b0edfe7280796 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/60719661b4cbd7ffbed1a0e0fa3bbc82d8bd2be9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ea4a98e924164586066b39f29bfcc7cc9da108cd Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ef6e608e5ee71eca0cd3475c737e684cef24f240 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f7a980b3b8f80fe367f679da376cf76e800f9480 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/feb8243eaea7efd5279b19667d7189fd8654c87a Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 06, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/60719661b4cbd7ffbed1a0e0fa3bbc82d8bd2be9 Added Reference https://git.kernel.org/stable/c/ef6e608e5ee71eca0cd3475c737e684cef24f240 Added Reference https://git.kernel.org/stable/c/feb8243eaea7efd5279b19667d7189fd8654c87a -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 04, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: can: usb_8dev: usb_8dev_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 usb_8dev_open() -> usb_8dev_start(), the URBs for USB-in transfers are allocated, added to the priv->rx_submitted anchor and submitted. In the complete callback usb_8dev_read_bulk_callback(), the URBs are processed and resubmitted. In usb_8dev_close() -> unlink_all_urbs() the URBs are freed by calling usb_kill_anchored_urbs(&priv->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 usb_8dev_read_bulk_callback() to the priv->rx_submitted anchor. Added Reference https://git.kernel.org/stable/c/07e9373739c6388af9d99797cdb2e79dbbcbe92b Added Reference https://git.kernel.org/stable/c/59ff56992bba28051ad67cd8cc7b0edfe7280796 Added Reference https://git.kernel.org/stable/c/ea4a98e924164586066b39f29bfcc7cc9da108cd Added Reference https://git.kernel.org/stable/c/f7a980b3b8f80fe367f679da376cf76e800f9480