SB20261022302 - Race condition in Linux kernel usb serial driver

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Main Vulnerability Database SB20261022302

SB20261022302 - Race condition in Linux kernel usb serial driver

Published: October 22, 2026

Security Bulletin ID SB20261022302
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Race condition (CVE-ID: CVE-2026-98697)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to leak kernel memory, potentially causing a denial of service through resource exhaustion.

The vulnerability exists due to a race condition in the Linux kernel USB serial subsystem when driver deregistration overlaps with writes to the new_id attribute. A local privileged user can write to the attribute during deregistration to add a dynamic ID that escapes cleanup, leaking its allocated memory.


Remediation

Install update from vendor's website.

References