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CVE-2023-53356
usb: gadget: u_serial: Add null pointer check in gserial_suspend
Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Add null pointer check in gserial_suspend Consider a case where gserial_disconnect has already cleared gser->ioport. And if gserial_suspend gets called afterwards, it will lead to accessing of gser->ioport and thus causing null pointer dereference. Avoid this by adding a null pointer check. Added a static spinlock to prevent gser->ioport from becoming null after the newly added null pointer check.

INFO

Published Date :

Sept. 17, 2025, 3:15 p.m.

Last Modified :

Sept. 17, 2025, 3:15 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2023-53356 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Add null pointer check to prevent dereferencing after disconnect.
  • Add null pointer check in gserial_suspend.
  • Prevent gser->ioport from becoming null.
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-2023-53356.

URL Resource
https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28e
https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909a
https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962
https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8f
https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-53356 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-2023-53356 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-2023-53356 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-53356 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.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Sep. 17, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Add null pointer check in gserial_suspend Consider a case where gserial_disconnect has already cleared gser->ioport. And if gserial_suspend gets called afterwards, it will lead to accessing of gser->ioport and thus causing null pointer dereference. Avoid this by adding a null pointer check. Added a static spinlock to prevent gser->ioport from becoming null after the newly added null pointer check.
    Added Reference https://git.kernel.org/stable/c/2788a3553f7497075653210b42e2aeb6ba95e28e
    Added Reference https://git.kernel.org/stable/c/2f6ecb89fe8feb2b60a53325b0eeb9866d88909a
    Added Reference https://git.kernel.org/stable/c/374447e3367767156405bedd230c5d391f4b7962
    Added Reference https://git.kernel.org/stable/c/a8ea7ed644cbf6314b5b0136b5398754b549fb8f
    Added Reference https://git.kernel.org/stable/c/e60a827ac074ce6bd58305fe5a86afab5fce6a04
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.