U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-72483 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: usb: host: max3421: Fix shift-out-of-bounds in max3421_hub_control() The `max3421_hub_control()` function handles USB hub class requests to the virtual root hub. In the `default` branches of both the `ClearPortFeature` and `SetPortFeature` switch statements, it modifies `max3421_hcd->port_status` by left shifting 1 by the request's `value` parameter. However, it does not validate whether this shift will exceed the width of `port_status`. So if a malicious userspace task with access to the root hub via /dev/bus/usb/.../001 issues a USBDEVFS_CONTROL ioctl with `wValue` greater than or equal to 32, the left shift operation invokes shift-out-of-bounds undefined behavior. This results in arbitrary bit corruption of `port_status`, including the normally-immutable change bits, which can bypass internal state checks and confuse the hub status. Fix this by rejecting requests whose `value` exceeds the shift width before performing the shift. This issue was found using a KLEE-based symbolic execution tool for kernel drivers that I'm currently developing.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://git.kernel.org/stable/c/00dd025324b56d39d37e57a08f473dab3a660f30 kernel.org
https://git.kernel.org/stable/c/02d03c61e8a7b016956acb48e8a2512d16d87517 kernel.org
https://git.kernel.org/stable/c/08b1d4cab0230697bc74c63fc4e40170a7559c54 kernel.org
https://git.kernel.org/stable/c/3be5f24e8270ba53b3c814d13689bb8644c86237 kernel.org
https://git.kernel.org/stable/c/4da073d57176d8e1c2bca34febfbc81d2560c1a5 kernel.org
https://git.kernel.org/stable/c/cff06b03b530ae1fe8a13e93a7848f2130e00fb4 kernel.org
https://git.kernel.org/stable/c/d512bdefd241b98f4d7bcb5bab5614a86411fad4 kernel.org
https://git.kernel.org/stable/c/e5fa9d8f40746ec3447335c9642c03410f5fd3af kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-72483
NVD Published Date:
08/15/2026
NVD Last Modified:
08/15/2026
Source:
kernel.org