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CVE-2026-98227— memstick: ms_block: destroy io_queue workqueue on removal

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： memstick: ms_block: 在设备移除时销毁 io_queue 工作队列 函数通过 为每张卡片创建了有序工作队列 。然而，该工作队列仅在初始化失败的路径中通过 被正确销毁；在 函数中从未对其进行销毁。 仅负责刷空（flush）该队列，而 和 也均未释放该工作队列。因此，每次卡片的插入/移除循环都会导致工作队列及其关联的 kworker 泄漏，随着反复操作，最终会耗尽内核内存。 修复方案：在 中，确保在磁盘已移除且队列已刷空后，销毁该工作队列。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 0ff795163f37109a134b5a421558530f8d091544 affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 19c3da6621a253f1f8b937ed91bc22330a930d9c affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 9a2e7cdc0880e735aff0968ee402f2c92a992b9b affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 6611f78ec3fd4b33a00bfda20725b254a22979f6 affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< f222bb8c30cf5699c560b29179ff2bddcac1f950 affected
0ab30494bc4f3bc1ea4659b7c5d97c5218554a63< 90af7fde083e1b22c349c3a8b1626728e44e474c affected
3.12 affected
< 3.12 unaffected
… +6 more rows
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I. Basic Information for CVE-2026-98227

Vulnerability Information
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Vulnerability Title
memstick: ms_block: destroy io_queue workqueue on removal
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0ab30494bc4f3bc1ea4659b7c5d97c5218554a63 ~ 0ff795163f37109a134b5a421558530f8d091544 -
Linux Linux 3.12 -

II. Public POCs for CVE-2026-98227

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III. Intelligence Information for CVE-2026-98227

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Patches & Fixes for CVE-2026-98227 (6)

Same Patch Batch · Linux · 2026-10-06 · 208 CVEs total

CVE-2026-98323 9.8 CRITICAL RDMA/siw: Bound fragmented header copies by the remaining length
CVE-2026-98365 9.8 CRITICAL RDMA/rxe: Fix integer overflow in mr_check_range() leading to OOB access
CVE-2026-98282 8.8 HIGH powerpc/iommu: Fix the overflow validation in iommu_tce_check_ioba
CVE-2026-98283 8.8 HIGH KVM: PPC: Book3S HV: fix use-after-free in kvmhv_emulate_tlbie_all_lpid()
CVE-2026-98339 8.8 HIGH wifi: cfg80211: don't filter by BSS type when removing stale entries
CVE-2026-98171 8.8 HIGH smb: client: fix next_buffer UAF and NextCommand bounds in compound PDUs
CVE-2026-98261 8.1 HIGH cifs: Fix server use-after-free in cifs_chan_skip_or_disable()
CVE-2026-98357 8.1 HIGH IB/isert: wait for deferred control PDU completions before releasing the connection
CVE-2026-98239 8.1 HIGH net: lan743x: fix RX checksum use-after-free
CVE-2026-98341 7.8 HIGH wifi: cfg80211: don't free driver-owned scan requests
CVE-2026-98324 7.8 HIGH dmaengine: pxa: fix double counting of the hw descriptors
CVE-2026-98228 7.8 HIGH mips: select CONFIG_WEAK_REORDERING_BEYOND_LLSC from CONFIG_EYEQ
CVE-2026-98229 7.8 HIGH xfrm: save input state data before secpath resets
CVE-2026-98320 7.8 HIGH netfilter: flowtable: hold reference on ct until flow is released
CVE-2026-98318 7.8 HIGH smb: client: validate absolute native symlink targets before NT fixups
CVE-2026-98315 7.8 HIGH ntfs: protect runlist updates with the runlist lock
CVE-2026-98260 7.8 HIGH exec: Cleanup POSIX timers right after de_thread()
CVE-2026-98256 7.8 HIGH signal: Prevent exec() race
CVE-2026-98258 7.8 HIGH posix-cpu-timers: Prevent freeing a timer which is queued on the expiry list
CVE-2026-98254 7.8 HIGH swiotlb: use the adjusted address for the highmem page lookup

Showing top 20 of 208 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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