CVE-2026-98227
Received
Received - Intake
memstick ms_block Workqueue Memory Leak in Linux Kernel
Vulnerability report for CVE-2026-98227, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-06
Last updated on: 2026-10-06
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
memstick: ms_block: destroy io_queue workqueue on removal
msb_init_disk() creates the per-card ordered workqueue msb->io_queue with
alloc_ordered_workqueue(). It is torn down with destroy_workqueue() only
on the init error path; msb_remove() never destroys it. msb_stop() merely
flushes the queue, and neither msb_data_clear() nor put_disk() free it. As
a result every card insert/remove cycle leaks the workqueue and its
kworker, exhausting kernel memory over repeated cycles.
Destroy the workqueue in msb_remove() after the disk has been removed and
the queue drained.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 |
| Linux | Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 |
| Linux | Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 |
| Linux | Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 |
| Linux | Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 |
| Linux | Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 |
| Linux | Linux | 3.12 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
