CVE-2026-98227
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.
How to fix
- Linux Linux0ff795163f37109a134b5a421558530f8d091544, 19c3da6621a253f1f8b937ed91bc22330a930d9c, 9a2e7cdc0880e735aff0968ee402f2c92a992b9b, 6611f78ec3fd4b33a00bfda20725b254a22979f6, f222bb8c30cf5699c560b29179ff2bddcac1f950, 90af7fde083e1b22c349c3a8b1626728e44e474c or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ≤ v < 0ff795163f37109a134b5a421558530f8d091544, 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ≤ v < 19c3da6621a253f1f8b937ed91bc22330a930d9c, 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ≤ v < 9a2e7cdc0880e735aff0968ee402f2c92a992b9b, 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ≤ v < 6611f78ec3fd4b33a00bfda20725b254a22979f6, 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ≤ v < f222bb8c30cf5699c560b29179ff2bddcac1f950, 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ≤ v < 90af7fde083e1b22c349c3a8b1626728e44e474c, 3.12 | 0ff795163f37109a134b5a421558530f8d091544, 19c3da6621a253f1f8b937ed91bc22330a930d9c, 9a2e7cdc0880e735aff0968ee402f2c92a992b9b, 6611f78ec3fd4b33a00bfda20725b254a22979f6, f222bb8c30cf5699c560b29179ff2bddcac1f950, 90af7fde083e1b22c349c3a8b1626728e44e474c |
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