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-2026-31497 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: clamp SCO altsetting table indices btusb_work() maps the number of active SCO links to USB alternate settings through a three-entry lookup table when CVSD traffic uses transparent voice settings. The lookup currently indexes alts[] with data->sco_num - 1 without first constraining sco_num to the number of available table entries. While the table only defines alternate settings for up to three SCO links, data->sco_num comes from hci_conn_num() and is used directly. Cap the lookup to the last table entry before indexing it so the driver keeps selecting the highest supported alternate setting without reading past alts[].


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/1019028eb124564cf7bca58a16f1df8a1ca30726 kernel.org Patch 
https://git.kernel.org/stable/c/129fa608b6ad08b8ab7178eeb2ec272c993aaccc kernel.org Patch 
https://git.kernel.org/stable/c/21c254202f9d78abe0fcd642a92966deb92bd226 kernel.org Patch 
https://git.kernel.org/stable/c/312c4450fe23014665c163f480edd5ad2e27bbb8 kernel.org Patch 
https://git.kernel.org/stable/c/476c9262b430c38c6a701a3b8176a3f48689085b kernel.org Patch 
https://git.kernel.org/stable/c/6fba3c3d48c927e55611a0f5ea34da88138ed0ff kernel.org Patch 
https://git.kernel.org/stable/c/834cf890d2c3d29cbfa1ee2376c40469c28ec297 kernel.org Patch 
https://git.kernel.org/stable/c/9dd13a8641de79bc1bc93da55cdd35259a002683 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-31497
NVD Published Date:
04/22/2026
NVD Last Modified:
04/28/2026
Source:
kernel.org