SB20261023115 - Race condition in Linux kernel memstick host driver

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Main Vulnerability Database SB20261023115

SB20261023115 - Race condition in Linux kernel memstick host driver

Published: October 23, 2026

Security Bulletin ID SB20261023115
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-2026-99038)

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

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service by hanging memory stick host removal and blocking kernel worker threads.

The vulnerability exists due to a race condition in the Linux kernel rtsx_usb_ms driver when device removal overlaps with memory stick request processing. A local user can trigger device removal during a memory stick check to leave a request without completion, causing removal to hang when the memory stick core waits for that request without a timeout.


Remediation

Install update from vendor's website.

References