SB2026050263 - Out-of-bounds read in Linux kernel usb caiaq

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Main Vulnerability Database SB2026050263

SB2026050263 - Out-of-bounds read in Linux kernel usb caiaq

Published: May 2, 2026

Security Bulletin ID SB2026050263
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-31778)

CWE-ID: CWE-125 - Out-of-bounds read

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


The vulnerability allows an attacker with physical access to disclose sensitive information.

The vulnerability exists due to an out-of-bounds read in the ALSA caiaq init_card path when processing a crafted USB device product name. An attacker with physical access can connect a specially crafted USB device to disclose sensitive information.

The issue is triggered by a product name containing many non-ASCII, non-space characters, which can cause a non-null-terminated string to be scanned past the end of a stack buffer.


Remediation

Install update from vendor's website.

References