SB2026091680 - Division by zero in Linux kernel link protocols driver

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Main Vulnerability Database SB2026091680

SB2026091680 - Division by zero in Linux kernel link protocols driver

Published: September 16, 2026

Security Bulletin ID SB2026091680
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) Division by zero (CVE-ID: CVE-2026-90035)

CWE-ID: CWE-369 - Divide By Zero

CVSSv4: 2.4 [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]


The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to division by zero in get_estimated_bw() when processing an estimated-bandwidth-change notification from a connected USB4/DPIA tunneling device before a bandwidth-allocation capability-change notification. An attacker with physical access can connect a device that reports an estimated-bandwidth change to cause a denial of service.


Remediation

Install update from vendor's website.

References