SB2026052855 - Improper input validation in Linux kernel usb

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Main Vulnerability Database SB2026052855

SB2026052855 - Improper input validation in Linux kernel usb

Published: May 28, 2026

Security Bulletin ID SB2026052855
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper input validation (CVE-ID: CVE-2026-46018)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to improper input validation in parse_uac2_sample_rate_range() when parsing a malformed uac2 range response from a usb audio device. A local attacker can provide a specially crafted uac2 range response to cause a denial of service.

The issue can trigger repeated kernel log messages while device probing still holds register_mutex.


Remediation

Install update from vendor's website.

References