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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-31720 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_uac1_legacy: validate control request size f_audio_complete() copies req->length bytes into a 4-byte stack variable: u32 data = 0; memcpy(&data, req->buf, req->length); req->length is derived from the host-controlled USB request path, which can lead to a stack out-of-bounds write. Validate req->actual against the expected payload size for the supported control selectors and decode only the expected amount of data. This avoids copying a host-influenced length into a fixed-size stack object.


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

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0d41772d98dcaf6c17e875b7d0ea0154ae1191ee kernel.org Patch 
https://git.kernel.org/stable/c/21b11e8581285c6f10ef43d05df349d445f24273 kernel.org Patch 
https://git.kernel.org/stable/c/26304d124e7f0383f8fe1168b5801a0ac7e16b1c kernel.org Patch 
https://git.kernel.org/stable/c/557d1d4e862eccd0b74cc377b66de3e1e8d49605 kernel.org Patch 
https://git.kernel.org/stable/c/6e0e34d85cd46ceb37d16054e97a373a32770f6c kernel.org Patch 
https://git.kernel.org/stable/c/8e5eb1d6e6a3d7bbea9c92132d0cda5793176426 kernel.org Patch 
https://git.kernel.org/stable/c/be2d32f0c3fe333d14c0a9ca90328dacbc3e06b8 kernel.org Patch 
https://git.kernel.org/stable/c/c6da4fed7537aec19880c24f6c3a95065adb1406 kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-31720
NVD Published Date:
05/01/2026
NVD Last Modified:
06/17/2026
Source:
kernel.org