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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-99038

memstick: rtsx_usb_ms: complete requests after eject instead of dropping them

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: memstick: rtsx_usb_ms: complete requests after eject instead of dropping them memstick_check() can pass its host->removing check just before rtsx_usb_ms_drv_remove() sets eject/removing. Its next request is then silently dropped: rtsx_usb_ms_request() skips schedule_work() once eject is set, and drv_remove's cancel_work_sync() can also cancel a queued handle_req before it picks the request up. Nobody completes card->mrq_complete. Once memstick core waits for requests without a timeout ("memstick: core: wait for request completion before freeing card"), this hangs removal: memstick_check() never returns and memstick_remove_host() blocks in flush_workqueue(): INFO: task kworker/u10:3:65 blocked for more than 20 seconds. Workqueue: kmemstick memstick_check __wait_for_common memstick_check INFO: task kworker/1:1:33 blocked for more than 20 seconds. Workqueue: usb_hub_wq hub_event __flush_workqueue memstick_remove_host rtsx_usb_ms_drv_remove Never drop a request. rtsx_usb_ms_request() always schedules handle_req, and handle_req fails requests with -ENOMEDIUM once eject is set, without touching the device. drv_remove flushes handle_req instead of cancelling it, and cancels it only after memstick_remove_host(), when no new request can arrive, so it cannot run on a freed host. The host_mutex drain in drv_remove is removed: handle_req always leaves host->req NULL when it finishes, so the drain never had anything to do, and it would now race with handle_req.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < c48245ef696e590e92cbfb622625642bec8dbbadaffected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < 602a00d75d2ab079c9ab7c0d7b56ae436e604148affected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < 8e4eda6e1b00624820fea1d35508d7422330ee25affected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < f2c181e1d58e911804e14543b2f1cc6b23a0d4d6affected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < 5b599e28aeb3684772aef64f46cc6f25f4c67128affected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < d7e811c3a49cd5cff529c157df886719e09370ecaffected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < 5616da0f92339328fa1472876df51555e15ad340affected
  • 99451dceeb5fdd789f0a2eeb3ee029e80d2ccc40 to < c96ca94425b076dc398d929366e378d1e22ec794affected

Linux Linux

Default version status: affected

  • 3.16affected
  • 0 to < 3.16unaffected
  • 5.10.273 to ≤ 5.10.*unaffected
  • 5.15.224 to ≤ 5.15.*unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.113 to ≤ 6.12.*unaffected
  • 6.18.57 to ≤ 6.18.*unaffected
  • 7.2.11 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References